chore(deps): bump rack from 3.0.8 to 3.0.9.1 in /image (#438)

Author: dependabot[bot]

image/Gemfile.lock

@@ -324,7 +324,7 @@ GEM
       multi_json
     prometheus-client (4.2.1)
     public_suffix (5.0.3)
-    rack (3.0.8)
+    rack (3.0.9.1)
     rack-oauth2 (1.21.3)
       activesupport
       attr_required
@@ -388,7 +388,6 @@ GEM
     yajl-ruby (1.4.3)
 
 PLATFORMS
-  ruby
   arm64-darwin-22
   x86_64-darwin-21
   x86_64-darwin-22