[Security] Bump rack from 2.2.2 to 2.2.3 (#423)

Bumps [rack](https://github.com/rack/rack) from 2.2.2 to 2.2.3. **This update includes a security fix.**
- [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-preview[bot] <support@dependabot.com>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Gemfile.lock

@@ -233,7 +233,7 @@ GEM
       byebug (~> 11.0)
       pry (~> 0.10)
     public_suffix (4.0.3)
-    rack (2.2.2)
+    rack (2.2.3)
     rack-cache (1.11.0)
       rack (>= 0.4)
     rack-test (1.1.0)