Bump rack from 2.2.4 to 2.2.6.3

Bumps [rack](https://github.com/rack/rack) from 2.2.4 to 2.2.6.3.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](https://github.com/rack/rack/compare/2.2.4...v2.2.6.3)

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

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

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    crono (2.0.0)
+    crono (2.0.1)
       rails (>= 5.2.8)
       sprockets-rails
 
@@ -125,7 +125,7 @@ GEM
     nokogiri (1.13.7-x86_64-linux)
       racc (~> 1.4)
     racc (1.6.0)
-    rack (2.2.4)
+    rack (2.2.6.3)
     rack-protection (2.2.0)
       rack
     rack-test (1.1.0)
@@ -192,7 +192,7 @@ GEM
       activesupport (>= 5.2)
       sprockets (>= 3.0.0)
     sqlite3 (1.4.2)
-    strscan (3.0.3)
+    strscan (3.0.4)
     temple (0.8.2)
     thor (1.2.1)
     tilt (2.0.10)