Update Hebrew language code to he per IANA registry
Here's my original PR into whisper that changes the same:  https://github.com/openai/whisper/pull/401

# What does this PR do?

Changes the language code for the Hebrew language from `iw` to `he` 
Per [IANA registry](https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry), `iw` was deprecated as the code for Hebrew in 1989 and the preferred code is `he`

The correct subtag: 
```
%%
Type: language
Subtag: he
Description: Hebrew
Added: 2005-10-16
Suppress-Script: Hebr
%%
``` 
And the deprecation
```
%%
Type: language
Subtag: iw
Description: Hebrew
Added: 2005-10-16
Deprecated: 1989-01-01
Preferred-Value: he
Suppress-Script: Hebr
%%
```


Fixes # (issue)


## 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.
- [ ] 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).
- [ ] Did you write any new necessary tests?


## Who can review?

@ArthurZucker @sanchit-gandhi

_The documentation is not available anymore as the PR was closed or merged._<|||||>Cool! thanks for this, it would be best to also update the models online wdyt @sanchit-gandhi <|||||>Funny bug that happens now, I cannot process hebrew. 

I use original whisper to detect language (because #21311 is not fixed yet)  and it returns "he" 

Then I use that to send to transformers whisper, and it fails as the token is not recognized (it expects iw)  🤭 <|||||>Added PRs for models (this.. was not easy 😅 ) 
Base PR - https://huggingface.co/openai/whisper-base/discussions/8
Tiny PR - https://huggingface.co/openai/whisper-tiny/discussions/6
Small PR - https://huggingface.co/openai/whisper-small/discussions/13
Medium PR - https://huggingface.co/openai/whisper-medium/discussions/8
Large PR - https://huggingface.co/openai/whisper-large/discussions/21
Large V2 PR - https://huggingface.co/openai/whisper-large-v2/discussions/18<|||||>@sgugger @ArthurZucker thanks for merging this in! 
The model PRs need to be merged in for this to work, correct? 
Otherwise there's a mismatch between this repo and loaded models in token names<|||||>Yes, they'll need to be merged.<|||||>They are all merged 😉 