Bump google-protobuf from 3.25.5 to 3.25.6 in the ruby group (#393)

Bumps the ruby group with 1 update: [google-protobuf](https://github.com/protocolbuffers/protobuf).


Updates `google-protobuf` from 3.25.5 to 3.25.6
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](protocolbuffers/protobuf@v3.25.5...v3.25.6)

---
updated-dependencies:
- dependency-name: google-protobuf
  dependency-type: indirect
  update-type: version-update:semver-patch
  dependency-group: ruby
...

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

Gemfile.lock

@@ -12,11 +12,11 @@ GEM
     ast (2.4.2)
     diff-lcs (1.5.1)
     docile (1.4.1)
-    google-protobuf (3.25.5)
-    google-protobuf (3.25.5-aarch64-linux)
-    google-protobuf (3.25.5-arm64-darwin)
-    google-protobuf (3.25.5-x86_64-darwin)
-    google-protobuf (3.25.5-x86_64-linux)
+    google-protobuf (3.25.6)
+    google-protobuf (3.25.6-aarch64-linux)
+    google-protobuf (3.25.6-arm64-darwin)
+    google-protobuf (3.25.6-x86_64-darwin)
+    google-protobuf (3.25.6-x86_64-linux)
     googleapis-common-protos-types (1.18.0)
       google-protobuf (>= 3.18, < 5.a)
     grpc (1.64.3)