Don't trigger empty PRs for Provider Map updates

[allejo]

Add the pre-commit Action to our provider job so that the generated files are formatted in the same commit after it touches them. This will prevent future empty PRs from being created when the only diff is a newline due to formatting, and our pre-commit makes a second commit "undoing" the lack of a newline in the generated code.

I left a comment in my changes, but I want to point out that we need to allow the pre-commit step to continue despite failure because it will always fail whenever it formats files. We don't care about it "failing" since it'll have fixed our files already anyway.

Closes #550

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