Bump Go version to 1.25.3 and update several dependencies:
- golang.org/x/oauth2 to v0.32.0
- cloud.google.com/go/compute/metadata to v0.9.0
- golang.org/x/crypto to v0.43.0
- golang.org/x/sync to v0.17.0
- golang.org/x/sys to v0.37.0
- golang.org/x/text to v0.30.0
This ensures compatibility and includes the latest bug fixes and
improvements.