Bump yard from 0.9.27 to 0.9.28 in /gemfiles/rails_61 (activeadmin#7535)

Bumps [yard](https://github.com/lsegal/yard) from 0.9.27 to 0.9.28.
- [Release notes](https://github.com/lsegal/yard/releases)
- [Changelog](https://github.com/lsegal/yard/blob/main/CHANGELOG.md)
- [Commits](lsegal/yard@v0.9.27...v0.9.28)

---
updated-dependencies:
- dependency-name: yard
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

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

Author: dependabot[bot]

gemfiles/rails_61/Gemfile.lock

@@ -458,7 +458,7 @@ GEM
     websocket-extensions (0.1.5)
     xpath (3.2.0)
       nokogiri (~> 1.8)
-    yard (0.9.27)
+    yard (0.9.28)
       webrick (~> 1.7.0)
     zeitwerk (2.5.4)