Use the pre-commit/action github action instead of doing it by hand

[C4ptainCrunch]

We were running pre-commit run --all "manually" as a step in GitHub actions. This is not desirable. Good catch by @Mortinat ! This PR uses the dedicated pre-commit/action github action instead

This will:

• Run the pre-commit checks in // of the other checks (we should gain a bit of time)
• Should improve the readability of the output
• Speed up the time to run pre-commit as the action uses some clever caching

Edit: confirmation: 34s pour avoir le retour du job de pre-commit (et 50s en moins dans le job de tests)