Bump rack from 3.1.12 to 3.1.16 (#259)

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
...

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Author: dependabot[bot]

Gemfile.lock

@@ -41,7 +41,7 @@ GEM
     prettier_print (1.2.1)
     prism (1.4.0)
     racc (1.8.1)
-    rack (3.1.15)
+    rack (3.1.16)
     rainbow (3.1.1)
     regexp_parser (2.10.0)
     rubocop (1.75.8)