fix(deps): update Gemfile.lock with ostruct gem

Add ostruct 0.6.1 to Gemfile.lock to satisfy bundle frozen mode
requirement in CI. Required for Ruby 3.4+ compatibility.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: pythoninthegrass

Gemfile.lock

@@ -178,6 +178,7 @@ GEM
     nkf (0.2.0)
     optparse (0.8.1)
     os (1.1.4)
+    ostruct (0.6.1)
     plist (3.7.2)
     public_suffix (7.0.0)
     rake (13.3.1)
@@ -229,6 +230,7 @@ PLATFORMS
 
 DEPENDENCIES
   fastlane
+  ostruct
 
 BUNDLED WITH
    2.6.9