Bump google-protobuf from 3.21.12 to 3.25.5 in /docs (#242)

Bumps [google-protobuf](https://github.com/protocolbuffers/protobuf) from 3.21.12 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@v3.21.12...v3.25.5)

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

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

Author: dependabot[bot]

docs/Gemfile.lock

@@ -12,7 +12,8 @@ GEM
     ffi (1.15.5)
     forwardable-extended (2.6.0)
     gemoji (3.0.1)
-    google-protobuf (3.21.12)
+    google-protobuf (3.25.5-arm64-darwin)
+    google-protobuf (3.25.5-x86_64-linux)
     http_parser.rb (0.8.0)
     i18n (1.12.0)
       concurrent-ruby (~> 1.0)