Signed-off-by: Alyssa Wilk <alyssar@chromium.org>

Bumps the examples-ext-authz group in /examples/ext_authz/auth/grpc-service with 1 update: [google.golang.org/grpc](https://github.com/grpc/grpc-go).


Updates `google.golang.org/grpc` from 1.60.1 to 1.61.0
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](grpc/grpc-go@v1.60.1...v1.61.0)

---
updated-dependencies:
- dependency-name: google.golang.org/grpc
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: examples-ext-authz
...

Signed-off-by: dependabot[bot] <support@github.com>