Remove dependency of Bert from Squeezebert tokenizer
Hi @sgugger,

Fixes #19303, the BertTokenizer dependency has been removed from `SqueezeBertTokenizer` and the BertTokenizerFast dependency has been removed from `SqueezeBertTokenizerFast`.

I ran `pytest tests/models/squeezebert/test_tokenization_squeezebert.py`, which passed.

Thanks for reviewing this! :)

## Before submitting
- [ ] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
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      Pull Request section?
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      to it if that's the case.
- [x] Did you make sure to update the documentation with your changes? Here are the
      [documentation guidelines](https://github.com/huggingface/transformers/tree/main/docs), and
      [here are tips on formatting docstrings](https://github.com/huggingface/transformers/tree/main/docs#writing-source-documentation).
- [x] Did you write any new necessary tests?
_The documentation is not available anymore as the PR was closed or merged._<|||||>I see that my code currently fails the style and code consistency checks. When I run `make style`, it seems to change a lot of files and ones that I did not touch. Is this normal?

I'm also trying to run `make repo-consistency` but keep getting
```
python utils/check_copies.py --fix_and_overwrite
make: python: No such file or directory
make: *** [fix-copies] Error 1
```
which is strange as I am running this from the root directory...<|||||>Hi @sgugger, many thanks for the quick replies! I have made the changes you mentioned above, and regarding `make repo-consistency` and `make-style`, it seems like `pip install -e ."[quality]"` did the trick!