build(deps): bump cloud.google.com/go from 0.75.0 to 0.76.0 (#17)

Bumps [cloud.google.com/go](https://github.com/googleapis/google-cloud-go) from 0.75.0 to 0.76.0.
- [Release notes](https://github.com/googleapis/google-cloud-go/releases)
- [Changelog](https://github.com/googleapis/google-cloud-go/blob/master/CHANGES.md)
- [Commits](googleapis/google-cloud-go@v0.75.0...v0.76.0)

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

deprecate ProjectID as its unused (#10)

hotfix for race condition

Return 401 for unauthenticated requests in middleware, not 403

removed unnecessary response code checks

doc: Added more documentation an updated README, moving away from gop…

…kg.in and will just update master branch

Fixed oauth2 client retrieval when using AppEngine standard

Fixed greedy build tags