⬆️ Bump rackup from 2.1.0 to 2.2.0 in the rails group (#2712)

Bumps the rails group with 1 update: [rackup](https://github.com/rack/rackup).


Updates `rackup` from 2.1.0 to 2.2.0
- [Release notes](https://github.com/rack/rackup/releases)
- [Changelog](https://github.com/rack/rackup/blob/main/releases.md)
- [Commits](rack/rackup@v2.1.0...v2.2.0)

---
updated-dependencies:
- dependency-name: rackup
  dependency-type: indirect
  update-type: version-update:semver-minor
  dependency-group: rails
...

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

Gemfile.lock

@@ -200,9 +200,8 @@ GEM
       rack (>= 3.0.0)
     rack-test (2.1.0)
       rack (>= 1.3)
-    rackup (2.1.0)
+    rackup (2.2.0)
       rack (>= 3)
-      webrick (~> 1.8)
     rails (7.2.2)
       actioncable (= 7.2.2)
       actionmailbox (= 7.2.2)
@@ -304,7 +303,6 @@ GEM
       activemodel (>= 6.0.0)
       bindex (>= 0.4.0)
       railties (>= 6.0.0)
-    webrick (1.9.0)
     websocket (1.2.11)
     websocket-driver (0.7.6)
       websocket-extensions (>= 0.1.0)