Build(deps-dev): Bump mock_redis from 0.28.0 to 0.29.0 (#14034)

Bumps [mock_redis](https://github.com/sds/mock_redis) from 0.28.0 to 0.29.0.
- [Release notes](https://github.com/sds/mock_redis/releases)
- [Changelog](https://github.com/sds/mock_redis/blob/master/CHANGELOG.md)
- [Commits](https://github.com/sds/mock_redis/compare/v0.28.0...v0.29.0)

---
updated-dependencies:
- dependency-name: mock_redis
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

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

Gemfile.lock

@@ -236,7 +236,7 @@ GEM
       ffi (~> 1.9)
     minitest (5.14.4)
     mocha (1.13.0)
-    mock_redis (0.28.0)
+    mock_redis (0.29.0)
       ruby2_keywords
     msgpack (1.4.2)
     multi_json (1.15.0)