Bump rack from 2.2.2 to 2.2.3 (#12)

Bumps [rack](https://github.com/rack/rack) from 2.2.2 to 2.2.3.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/master/CHANGELOG.md)
- [Commits](rack/rack@v2.2.2...2.2.3)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile.lock

@@ -241,7 +241,7 @@ GEM
     psych (3.0.3)
     public_suffix (3.0.3)
     puma (3.12.6)
-    rack (2.2.2)
+    rack (2.2.3)
     rack-cors (1.0.5)
       rack (>= 1.6.0)
     rack-test (1.1.0)