Bump rack from 2.2.18 to 2.2.19

Bumps [rack](https://github.com/rack/rack) from 2.2.18 to 2.2.19.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](rack/rack@v2.2.18...v2.2.19)

---
updated-dependencies:
- dependency-name: rack
  dependency-version: 2.2.19
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Gemfile.lock

@@ -170,7 +170,7 @@ GEM
     puma (6.4.3)
       nio4r (~> 2.0)
     racc (1.8.1)
-    rack (2.2.18)
+    rack (2.2.19)
     rack-session (1.0.2)
       rack (< 3)
     rack-test (2.2.0)