e2e back to double quotes

Author: hsubox76

.github/workflows/e2e-test.yml

@@ -49,7 +49,7 @@ jobs:
           PROJECT_CONFIG: ${{ secrets.TEST_PROJECT_CONFIG }}
           TEST_ACCOUNT: ${{ secrets.TEST_ACCOUNT }}
         run: |
-          echo 'export const config = $PROJECT_CONFIG; export const testAccount = $TEST_ACCOUNT' > firebase-config.js
+          echo "export const config = $PROJECT_CONFIG; export const testAccount = $TEST_ACCOUNT" > firebase-config.js
       - name: Poll npm until version to test is available for install
         run: |
           echo "Polling npm for firebase@${{ github.event.client_payload.versionOrTag }}"