chore(deps): bump rack in the bundler-security-updates group

Bumps the bundler-security-updates group with 1 update: [rack](https://github.com/rack/rack).


Updates `rack` from 3.1.15 to 3.1.16
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](rack/rack@v3.1.15...v3.1.16)

---
updated-dependencies:
- dependency-name: rack
  dependency-version: 3.1.16
  dependency-type: indirect
  dependency-group: bundler-security-updates
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -89,7 +89,7 @@ GEM
       racc
     prism (1.4.0)
     racc (1.8.1)
-    rack (3.1.15)
+    rack (3.1.16)
     rainbow (3.1.1)
     rake (13.2.1)
     rb-fsevent (0.11.2)