Bump rack from 2.2.9 to 3.1.8

Bumps [rack](https://github.com/rack/rack) from 2.2.9 to 3.1.8.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](rack/rack@v2.2.9...v3.1.8)

---
updated-dependencies:
- dependency-name: rack
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Gemfile.lock

@@ -780,24 +780,24 @@ GEM
  raabro (1.4.0)
  racc (1.8.1)
  racc (1.8.1-java)
- rack (2.2.9)
+ rack (3.1.8)
  rack-attack (6.7.0)
  rack (>= 1.0, < 4)
  rack-cors (2.0.2)
  rack (>= 2.0.0)
- rack-protection (3.2.0)
+ rack-protection (4.0.0)
  base64 (>= 0.1.0)
- rack (~> 2.2, >= 2.2.4)
- rack-session (1.0.2)
- rack (< 3)
+ rack (>= 3.0.0, < 4)
+ rack-session (2.0.0)
+ rack (>= 3.0.0)
  rack-test (2.1.0)
  rack (>= 1.3)
  rack-timeout (0.7.0)
  rack-vcr (0.1.6)
  vcr (>= 2.9)
- rackup (1.0.0)
- rack (< 3)
- webrick
+ rackup (2.1.0)
+ rack (>= 3)
+ webrick (~> 1.8)
  rails (7.1.3.4)
  actioncable (= 7.1.3.4)
  actionmailbox (= 7.1.3.4)