Bump rswag-ui from 2.8.0 to 2.9.0 (#12883)

Bumps [rswag-ui](https://github.com/rswag/rswag) from 2.8.0 to 2.9.0.
- [Release notes](https://github.com/rswag/rswag/releases)
- [Changelog](https://github.com/rswag/rswag/blob/master/CHANGELOG.md)
- [Commits](rswag/rswag@2.8.0...2.9.0)

---
updated-dependencies:
- dependency-name: rswag-ui
  dependency-type: direct:production
  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>
Co-authored-by: Ryan McNeil <ryan.mcneil@oddball.io>

Gemfile.lock

@@ -537,7 +537,7 @@ GEM
     httpi (2.5.0)
       rack
       socksify
-    i18n (1.13.0)
+    i18n (1.14.1)
       concurrent-ruby (~> 1.0)
     ice_nine (0.11.2)
     image_processing (1.12.2)
@@ -729,8 +729,9 @@ GEM
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.5.0)
-      loofah (~> 2.19, >= 2.19.1)
+    rails-html-sanitizer (1.6.0)
+      loofah (~> 2.21)
+      nokogiri (~> 1.14)
     rails-session_cookie (0.3.0)
       rails (>= 4.0)
     rails_semantic_logger (4.12.0)
@@ -825,7 +826,7 @@ GEM
       json-schema (>= 2.2, < 4.0)
       railties (>= 3.1, < 7.1)
       rspec-core (>= 2.14)
-    rswag-ui (2.8.0)
+    rswag-ui (2.9.0)
       actionpack (>= 3.1, < 7.1)
       railties (>= 3.1, < 7.1)
     rubocop (1.45.1)