Update iOS CI release step to run install:ios:ci

- RubyGems Bundler install (deploy mode)
- CocoaPods install (deploy mode)
- i.e. fail if Podfile.lock/Gemfile.lock nondeterministic

Author: leotm

.github/workflows/ios.yml

@@ -56,10 +56,7 @@ jobs:
 #     - name: Xcode clean
 #       run: xcodebuild clean
 
-#     Release
     - name: Normalise Hermes CocoaPods lockfile checksum # TODO: Fix https://github.com/facebook/react-native/issues/54891
       run: bundle exec pod update hermes-engine --no-repo-update --project-directory=ios
-    - name: Install pods (release)
-      run: cd ios && PRODUCTION=1 pod install  && cd .. # --clean-install --repo-update
     - name: Build iOS (release)
-      run: yarn ios:release
+      run: yarn install:ios:ci