Bump loofah from 2.21.3 to 2.21.4

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
...

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

Gemfile.lock

@@ -167,12 +167,12 @@ GEM
     listen (3.8.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
-    loofah (2.21.3)
+    loofah (2.21.4)
       crass (~> 1.0.2)
       nokogiri (>= 1.12.0)
     mercenary (0.4.0)
     method_source (1.0.0)
-    mini_portile2 (2.8.4)
+    mini_portile2 (2.8.5)
     mini_racer (0.8.0)
       libv8-node (~> 18.16.0.0)
     minitest (5.20.0)
@@ -199,7 +199,7 @@ GEM
       ruby-rc4
       ttfunk
     public_suffix (5.0.3)
-    racc (1.7.1)
+    racc (1.7.2)
     rack (2.2.8)
     rack-test (2.1.0)
       rack (>= 1.3)