[Security] Bump loofah from 2.2.2 to 2.2.3 (#9160)

Bumps [loofah](https://github.com/flavorjones/loofah) from 2.2.2 to 2.2.3. **This update includes security fixes.**
- [Release notes](https://github.com/flavorjones/loofah/releases)
- [Changelog](https://github.com/flavorjones/loofah/blob/master/CHANGELOG.md)
- [Commits](https://github.com/flavorjones/loofah/compare/v2.2.2...v2.2.3)

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

Gemfile.lock

@@ -319,7 +319,7 @@ GEM
       activesupport (>= 4)
       railties (>= 4)
       request_store (~> 1.0)
-    loofah (2.2.2)
+    loofah (2.2.3)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.0)