Build(deps): Bump loofah from 2.21.3 to 2.21.4 (#23891)

Bumps [loofah](https://github.com/flavorjones/loofah) from 2.21.3 to 2.21.4.
- [Release notes](https://github.com/flavorjones/loofah/releases)
- [Changelog](https://github.com/flavorjones/loofah/blob/main/CHANGELOG.md)
- [Commits](https://github.com/flavorjones/loofah/compare/v2.21.3...v2.21.4)

---
updated-dependencies:
- dependency-name: loofah
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Gemfile.lock

@@ -213,7 +213,7 @@ GEM
     logstash-logger (0.26.1)
       logstash-event (~> 1.2)
     logster (2.13.0)
-    loofah (2.21.3)
+    loofah (2.21.4)
       crass (~> 1.0.2)
       nokogiri (>= 1.12.0)
     lru_redux (1.1.0)