Bump rack from 2.2.6.3 to 2.2.23 in /spec/bundle/secure

Bumps [rack](https://github.com/rack/rack) from 2.2.6.3 to 2.2.23.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](rack/rack@v2.2.6.3...v2.2.23)

---
updated-dependencies:
- dependency-name: rack
  dependency-version: 2.2.23
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

spec/bundle/secure/Gemfile.lock

@@ -68,7 +68,7 @@ GEM
     nokogiri (1.19.3-x86_64-linux-gnu)
       racc (~> 1.4)
     racc (1.8.1)
-    rack (2.2.6.3)
+    rack (2.2.23)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.8)