Add CocoaPods repo update step

Added step to update CocoaPods repository before Xcode setup.

Author: 4sunny

.github/workflows/firebase-test-deploy.yaml

@@ -25,6 +25,12 @@ jobs:
 
       - name: Install Flutter dependencies
         run: flutter pub get
+        
+      - name: Update CocoaPods repo
+        run: |
+          cd ios
+          pod repo update
+          cd ..
       
       - name: Setup Xcode
         uses: maxim-lobanov/setup-xcode@v1
@@ -147,4 +153,4 @@ jobs:
         run: |
           security delete-keychain $RUNNER_TEMP/app-signing.keychain-db || true
           rm -rf ~/private_keys || true
-          rm -f ~/Library/MobileDevice/Provisioning\ Profiles/*.mobileprovision || true
+          rm -f ~/Library/MobileDevice/Provisioning\ Profiles/*.mobileprovision || true