chore: refine CocoaPods caching key in iOS build workflow

- Updated the caching key in the iOS build workflow to target only the Podfile, enhancing cache accuracy and build efficiency.

Author: patrickkabwe

.github/workflows/ios-build.yml

@@ -82,7 +82,7 @@ jobs:
         uses: actions/cache@v4
         with:
           path: example/ios/Pods
-          key: ${{ runner.os }}-pods-${{ hashFiles('example/ios/Podfile*') }}
+          key: ${{ runner.os }}-pods-${{ hashFiles('example/ios/Podfile') }}
           restore-keys: |
             ${{ runner.os }}-pods-