chore(deps): bump rack from 2.2.14 to 2.2.20 (#2829)

Bumps [rack](https://github.com/rack/rack) from 2.2.14 to 2.2.20.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](rack/rack@v2.2.14...v2.2.20)

---
updated-dependencies:
- dependency-name: rack
  dependency-version: 2.2.20
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: zhangyaning <zhangyaning1985@gmail.com>

Author: dependabot[bot]

Gemfile.lock

@@ -350,7 +350,7 @@ GEM
       nio4r (~> 2.0)
     raabro (1.4.0)
     racc (1.8.1)
-    rack (2.2.14)
+    rack (2.2.20)
     rack-attack (6.6.1)
       rack (>= 1.0, < 3)
     rack-cache (1.13.0)