chore(deps): bump rack from 2.2.3 to 2.2.3.1 in /base-image (#326)

Bumps [rack](https://github.com/rack/rack) from 2.2.3 to 2.2.3.1.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](rack/rack@2.2.3...2.2.3.1)

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

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

base-image/Gemfile.lock

@@ -300,7 +300,7 @@ GEM
       webfinger (>= 1.0.1)
     prometheus-client (2.1.0)
     public_suffix (4.0.6)
-    rack (2.2.3)
+    rack (2.2.3.1)
     rack-oauth2 (1.19.0)
       activesupport
       attr_required