feat: uncomment build demo swift on CI

Author: OlenaPostindustria

.github/workflows/ios-sdk-ci.yml

@@ -42,7 +42,7 @@ jobs:
           bundler-cache: true
       - name: Build Demo Swift
         id: build-demo-swift
-        run: echo TODO UNCOMMENT # bundle exec fastlane demo_swift
+        run: bundle exec fastlane demo_swift
       - name: Store Artifacts
         uses: actions/upload-artifact@v4
         with: