Bump rack from 3.1.12 to 3.1.16

Bumps [rack](https://github.com/rack/rack) from 3.1.12 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@v3.1.12...v3.1.16)

---
updated-dependencies:
- dependency-name: rack
  dependency-version: 3.1.16
  dependency-type: indirect
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -420,7 +420,7 @@ GEM
       rspec-mocks (~> 3.12)
       rspec-support (~> 3.12)
     racc (1.8.1)
-    rack (3.1.12)
+    rack (3.1.16)
     rack-attack (6.7.0)
       rack (>= 1.0, < 4)
     rack-mini-profiler (3.3.1)