Bump google-protobuf from 3.25.3 to 3.25.5 in /examples/rails

Bumps [google-protobuf](https://github.com/protocolbuffers/protobuf) from 3.25.3 to 3.25.5.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](protocolbuffers/protobuf@v3.25.3...v3.25.5)

---
updated-dependencies:
- dependency-name: google-protobuf
  dependency-type: indirect
...

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

examples/rails/Gemfile.lock

@@ -112,7 +112,7 @@ GEM
       gapic-common (>= 0.21.1, < 2.a)
       google-cloud-errors (~> 1.0)
       grpc-google-iam-v1 (~> 1.1)
-    google-protobuf (3.25.3)
+    google-protobuf (3.25.5)
     googleapis-common-protos (1.5.0)
       google-protobuf (~> 3.18)
       googleapis-common-protos-types (~> 1.7)