Bump loofah from 2.3.0 to 2.9.0

Bumps [loofah](https://github.com/flavorjones/loofah) from 2.3.0 to 2.9.0.
- [Release notes](https://github.com/flavorjones/loofah/releases)
- [Changelog](https://github.com/flavorjones/loofah/blob/main/CHANGELOG.md)
- [Commits](flavorjones/loofah@v2.3.0...v2.9.0)

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

Gemfile.lock

@@ -113,7 +113,7 @@ GEM
     chronic (0.10.2)
     concurrent-ruby (1.1.5)
     connection_pool (2.2.2)
-    crass (1.0.4)
+    crass (1.0.6)
     datetime_picker_rails (0.0.7)
       momentjs-rails (>= 2.8.1)
     devise (4.7.1)
@@ -162,7 +162,7 @@ GEM
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
-    loofah (2.3.0)
+    loofah (2.9.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)