Bump psutil from 5.6.3 to 5.6.6 in /examples/distillation
Bumps [psutil](https://github.com/giampaolo/psutil) from 5.6.3 to 5.6.6.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/giampaolo/psutil/blob/master/HISTORY.rst">psutil's changelog</a>.</em></p>
<blockquote>
<h1>5.6.6</h1>
<p>2019-11-25</p>
<p><strong>Bug fixes</strong></p>
<ul>
<li>1179_: [Linux] Process cmdline() now takes into account misbehaving processes
renaming the command line and using inappropriate chars to separate args.</li>
<li>1616_: use of Py_DECREF instead of Py_CLEAR will result in double free and
segfault
(<code>CVE-2019-18874 &lt;https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18874&gt;</code>__).
(patch by Riccardo Schirone)</li>
<li>1619_: [OpenBSD] compilation fails due to C syntax error.  (patch by Nathan
Houghton)</li>
</ul>
<h1>5.6.5</h1>
<p>2019-11-06</p>
<p><strong>Bug fixes</strong></p>
<ul>
<li>1615_: remove pyproject.toml as it was causing installation issues.</li>
</ul>
<h1>5.6.4</h1>
<p>2019-11-04</p>
<p><strong>Enhancements</strong></p>
<ul>
<li>1527_: [Linux] added Process.cpu_times().iowait counter, which is the time
spent waiting for blocking I/O to complete.</li>
<li>1565_: add PEP 517/8 build backend and requirements specification for better
pip integration.  (patch by Bernát Gábor)</li>
</ul>
<p><strong>Bug fixes</strong></p>
<ul>
<li>875_: [Windows] Process' cmdline(), environ() or cwd() may occasionally fail
with ERROR_PARTIAL_COPY which now gets translated to AccessDenied.</li>
<li>1126_: [Linux] cpu_affinity() segfaults on CentOS 5 / manylinux.
cpu_affinity() support for CentOS 5 was removed.</li>
<li>1528_: [AIX] compilation error on AIX 7.2 due to 32 vs 64 bit differences.
(patch by Arnon Yaari)</li>
<li>1535_: 'type' and 'family' fields returned by net_connections() are not
always turned into enums.</li>
<li>1536_: [NetBSD] process cmdline() erroneously raise ZombieProcess error if
cmdline has non encodable chars.</li>
<li>1546_: usage percent may be rounded to 0 on Python 2.</li>
</ul>
</tr></table> ... (truncated)
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/giampaolo/psutil/commit/c6cd256da95ffe9599792759b1c2586ba24fa047"><code>c6cd256</code></a> pre release</li>
<li><a href="https://github.com/giampaolo/psutil/commit/b2414b83d3d728ec34ea0e35bfb21517ee231401"><code>b2414b8</code></a> revert <a href="https://github-redirect.dependabot.com/giampaolo/psutil/issues/1595">#1595</a></li>
<li><a href="https://github.com/giampaolo/psutil/commit/c63369e999b458ecbd559bdde895c344b4db2841"><code>c63369e</code></a> updat HISTORY</li>
<li><a href="https://github.com/giampaolo/psutil/commit/edb20f664f28653dcdd24f0bf0191984738dca6e"><code>edb20f6</code></a> linux, cmdline(), fix for <a href="https://github-redirect.dependabot.com/giampaolo/psutil/issues/1179">#1179</a>, comment 552984549: sometimes string ends wit...</li>
<li><a href="https://github.com/giampaolo/psutil/commit/d739cbb1a5b207212d467b219dfc25b017911530"><code>d739cbb</code></a> use PROCESS_QUERY_LIMITED_INFORMATION</li>
<li><a href="https://github.com/giampaolo/psutil/commit/f7e898b0987f97352c7551bdd9b29b594e1236f6"><code>f7e898b</code></a> <a href="https://github-redirect.dependabot.com/giampaolo/psutil/issues/1595">#1595</a>: use psutil_pid_is_running() instead of GetExitCodeProcess</li>
<li><a href="https://github.com/giampaolo/psutil/commit/72c84cb4edb5c0968a83c1f45ad5cc51235e0af3"><code>72c84cb</code></a> #fix <a href="https://github-redirect.dependabot.com/giampaolo/psutil/issues/1595">#1595</a> / windows: kill() may not raise AccessDenied</li>
<li><a href="https://github.com/giampaolo/psutil/commit/1f8d432db12a907544ac533b66a5a61ba25321fb"><code>1f8d432</code></a> Merge branch 'master' of github.com:giampaolo/psutil</li>
<li><a href="https://github.com/giampaolo/psutil/commit/e6faebcd7adaa327d1ce57385cbebe7724d02350"><code>e6faebc</code></a> release gil around users()/BSD (<a href="https://github-redirect.dependabot.com/giampaolo/psutil/issues/1425">#1425</a>)</li>
<li><a href="https://github.com/giampaolo/psutil/commit/5cb1b0b526765720253fdb2e8eff0bf380bbe0a8"><code>5cb1b0b</code></a> Merge branch 'master' of github.com:giampaolo/psutil</li>
<li>Additional commits viewable in <a href="https://github.com/giampaolo/psutil/compare/release-5.6.3...release-5.6.6">compare view</a></li>
</ul>
</details>
<br />


[![Dependabot compatibility score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=psutil&package-manager=pip&previous-version=5.6.3&new-version=5.6.6)](https://help.github.com/articles/configuring-automated-security-fixes)

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting `@dependabot rebase`.

[//]: # (dependabot-automerge-start)
[//]: # (dependabot-automerge-end)

---

<details>
<summary>Dependabot commands and options</summary>
<br />

You can trigger Dependabot actions by commenting on this PR:
- `@dependabot rebase` will rebase this PR
- `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it
- `@dependabot merge` will merge this PR after your CI passes on it
- `@dependabot squash and merge` will squash and merge this PR after your CI passes on it
- `@dependabot cancel merge` will cancel a previously requested merge and block automerging
- `@dependabot reopen` will reopen this PR if it is closed
- `@dependabot close` will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually
- `@dependabot ignore this major version` will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
- `@dependabot ignore this minor version` will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
- `@dependabot ignore this dependency` will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)
- `@dependabot use these labels` will set the current labels as the default for future PRs for this repo and language
- `@dependabot use these reviewers` will set the current reviewers as the default for future PRs for this repo and language
- `@dependabot use these assignees` will set the current assignees as the default for future PRs for this repo and language
- `@dependabot use this milestone` will set the current milestone as the default for future PRs for this repo and language

You can disable automated security fix PRs for this repo from the [Security Alerts page](https://github.com/huggingface/transformers/network/alerts).

</details>
# [Codecov](https://codecov.io/gh/huggingface/transformers/pull/3254?src=pr&el=h1) Report
> Merging [#3254](https://codecov.io/gh/huggingface/transformers/pull/3254?src=pr&el=desc) into [master](https://codecov.io/gh/huggingface/transformers/commit/2e81b9d8d76a4d41a13f74eb5e0f4a65d8143cab?src=pr&el=desc) will **decrease** coverage by `1.1%`.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/huggingface/transformers/pull/3254/graphs/tree.svg?width=650&token=9qOlN6Hb1c&height=150&src=pr)](https://codecov.io/gh/huggingface/transformers/pull/3254?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master    #3254      +/-   ##
==========================================
- Coverage   77.93%   76.82%   -1.11%     
==========================================
  Files          98       98              
  Lines       16666    16666              
==========================================
- Hits        12988    12804     -184     
- Misses       3678     3862     +184
```


| [Impacted Files](https://codecov.io/gh/huggingface/transformers/pull/3254?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [src/transformers/modeling\_tf\_pytorch\_utils.py](https://codecov.io/gh/huggingface/transformers/pull/3254/diff?src=pr&el=tree#diff-c3JjL3RyYW5zZm9ybWVycy9tb2RlbGluZ190Zl9weXRvcmNoX3V0aWxzLnB5) | `8.72% <0%> (-81.21%)` | :arrow_down: |
| [src/transformers/modeling\_roberta.py](https://codecov.io/gh/huggingface/transformers/pull/3254/diff?src=pr&el=tree#diff-c3JjL3RyYW5zZm9ybWVycy9tb2RlbGluZ19yb2JlcnRhLnB5) | `85.71% <0%> (-10%)` | :arrow_down: |
| [src/transformers/modeling\_tf\_utils.py](https://codecov.io/gh/huggingface/transformers/pull/3254/diff?src=pr&el=tree#diff-c3JjL3RyYW5zZm9ybWVycy9tb2RlbGluZ190Zl91dGlscy5weQ==) | `82.46% <0%> (-3.23%)` | :arrow_down: |
| [src/transformers/modeling\_xlnet.py](https://codecov.io/gh/huggingface/transformers/pull/3254/diff?src=pr&el=tree#diff-c3JjL3RyYW5zZm9ybWVycy9tb2RlbGluZ194bG5ldC5weQ==) | `73.48% <0%> (-2.3%)` | :arrow_down: |
| [src/transformers/modeling\_ctrl.py](https://codecov.io/gh/huggingface/transformers/pull/3254/diff?src=pr&el=tree#diff-c3JjL3RyYW5zZm9ybWVycy9tb2RlbGluZ19jdHJsLnB5) | `96% <0%> (-2.23%)` | :arrow_down: |
| [src/transformers/modeling\_openai.py](https://codecov.io/gh/huggingface/transformers/pull/3254/diff?src=pr&el=tree#diff-c3JjL3RyYW5zZm9ybWVycy9tb2RlbGluZ19vcGVuYWkucHk=) | `80.2% <0%> (-1.35%)` | :arrow_down: |
| [src/transformers/modeling\_utils.py](https://codecov.io/gh/huggingface/transformers/pull/3254/diff?src=pr&el=tree#diff-c3JjL3RyYW5zZm9ybWVycy9tb2RlbGluZ191dGlscy5weQ==) | `93.56% <0%> (-0.14%)` | :arrow_down: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/huggingface/transformers/pull/3254?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/huggingface/transformers/pull/3254?src=pr&el=footer). Last update [2e81b9d...28fce2c](https://codecov.io/gh/huggingface/transformers/pull/3254?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
