deps: Update dependency google-auth to v2.28.2

[renovate-bot]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
google-auth	==2.28.1 -> ==2.28.2

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Release Notes

googleapis/google-auth-library-python (google-auth)

### [`v2.28.2`](https://togithub.com/googleapis/google-auth-library-python/blob/HEAD/CHANGELOG.md#2282-2024-03-08) [Compare Source](https://togithub.com/googleapis/google-auth-library-python/compare/v2.28.1...v2.28.2) ##### Bug Fixes - Remove gce log for expected 404 ([#​1491](https://togithub.com/googleapis/google-auth-library-python/issues/1491)) ([cb04e49](https://togithub.com/googleapis/google-auth-library-python/commit/cb04e49efa17004bff3aaa9ed974396d10f839b5))

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