Bump google-github-actions/auth from 2.1.7 to 2.1.8 (#1679)

Bumps [google-github-actions/auth](https://github.com/google-github-actions/auth) from 2.1.7 to 2.1.8.
- [Release notes](https://github.com/google-github-actions/auth/releases)
- [Changelog](https://github.com/google-github-actions/auth/blob/main/CHANGELOG.md)
- [Commits](google-github-actions/auth@6fc4af4...71f9864)

---
updated-dependencies:
- dependency-name: google-github-actions/auth
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/pull-request.yml

@@ -242,7 +242,7 @@ jobs:
           ./gradlew assembleDebug assembleAndroidTest
       - name: Authenticate to Google Cloud for Firebase Test Lab
         id: auth_test_lab
-        uses: google-github-actions/auth@6fc4af4b145ae7821d527454aa9bd537d1f2dc5f
+        uses: google-github-actions/auth@71f986410dfbc7added4569d411d040a91dc6935
         with:
           create_credentials_file: true
           project_id: ${{ vars.FIREBASE_TEST_LAB_PROJECT }}
@@ -380,7 +380,7 @@ jobs:
         uses: ./.github/actions/setup
       - name: Authenticate to Google Cloud for Firebase Test Lab
         id: auth_test_lab
-        uses: google-github-actions/auth@6fc4af4b145ae7821d527454aa9bd537d1f2dc5f
+        uses: google-github-actions/auth@71f986410dfbc7added4569d411d040a91dc6935
         with:
           create_credentials_file: true
           project_id: ${{ vars.FIREBASE_TEST_LAB_PROJECT }}