Update ruby version

Author: mizadi

.github/workflows/ios-tests.yml

@@ -32,7 +32,7 @@ jobs:
       - name: Setup Ruby (for CocoaPods)
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 2.7
+          ruby-version: 3.2
 
       - name: Install CocoaPods
         run: sudo gem install cocoapods