Set FIREBASE_APP_CHECK_DEBUG_SECRET

Author: mrober

.github/workflows/sessions-e2e.yml

@@ -36,5 +36,7 @@ jobs:
           credentials_json: ${{ secrets.GCP_SERVICE_ACCOUNT }}
       - uses: google-github-actions/setup-gcloud@v0
       - name: Run sessions end-to-end tests
+        env:
+          FIREBASE_APP_CHECK_DEBUG_SECRET: ${{ secrets.FIREBASE_APP_CHECK_DEBUG_SECRET }}
         run: |
           ./gradlew :firebase-sessions:deviceCheck withErrorProne -PtargetBackend="prod"