ci: add step for starting dataconnect emulator

Author: HassanBahati

.github/workflows/tests.yaml

@@ -36,6 +36,10 @@ jobs:
       - name: Start Firebase Emulator Suite
         uses: invertase/[email protected]
 
+      # Start DataConnect Emulator
+      - name: Start DataConnect Emulator
+        run: firebase emulators:start --only dataconnect --project test &
+
       - name: Verify Running Emulators
         run: |
           curl --silent http://localhost:4400/emulators | jq 'keys[]'