chore: bump google/auth dep version

[razvanphp]

googleapis/google-auth-library-php#566

[bshaffer]

thank you @razvanphp !

Is there a specific reason why this needs to be bumped? I'm happy to do it, but I am curious because we do have --prefer-lowest tests which are passing, so if there's a compatibility error with a previous version, I would like to check why we aren't catching it.

[razvanphp]

Ah, I see your point. The reason is so that we can use the features included in those new versions without risking not having them.

We have a dependancy on this repo only, not on the auth package. Maybe we can add this as explicit in our composer.json instead?

[bshaffer]

closing because it's too difficult to get these tests to pass from a fork and with a non-google author, and since I updated the PR from main, now it requires two authors, which is a huge hassle.

Also it's not a change we really need.