Bump rack from 2.2.3.1 to 2.2.6.4 in /ruby-admin-portal-example

Bumps [rack](https://github.com/rack/rack) from 2.2.3.1 to 2.2.6.4.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](rack/rack@2.2.3.1...v2.2.6.4)

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

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

Author: dependabot[bot]

ruby-admin-portal-example/Gemfile.lock

@@ -4,7 +4,7 @@ GEM
     dotenv (2.7.6)
     mustermann (1.1.1)
       ruby2_keywords (~> 0.0.1)
-    rack (2.2.3.1)
+    rack (2.2.6.4)
     rack-protection (2.2.0)
       rack
     ruby2_keywords (0.0.5)
@@ -13,9 +13,9 @@ GEM
       rack (~> 2.2)
       rack-protection (= 2.2.0)
       tilt (~> 2.0)
-    sorbet-runtime (0.5.10263)
+    sorbet-runtime (0.5.10741)
     tilt (2.0.10)
-    workos (2.5.0)
+    workos (2.12.0)
       sorbet-runtime (~> 0.5)
 
 PLATFORMS
@@ -24,7 +24,7 @@ PLATFORMS
 DEPENDENCIES
   dotenv (= 2.7.6)
   sinatra (= 2.2.0)
-  workos (= 2.5.0)
+  workos (= 2.12.0)
 
 BUNDLED WITH
    2.1.4