Bump google-github-actions/auth from 2.1.7 to 2.1.8 in the actions gr…

…oup (#515)

Bumps the actions group with 1 update: [google-github-actions/auth](https://github.com/google-github-actions/auth).


Updates `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@v2.1.7...v2.1.8)

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

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

.github/workflows/chart.yaml

@@ -191,7 +191,7 @@ jobs:
       - id: auth
         if: github.actor != 'dependabot[bot]'
         name: Authenticate to Google Cloud
-        uses: google-github-actions/auth@v2.1.7
+        uses: google-github-actions/auth@v2.1.8
         with:
           workload_identity_provider: ${{ secrets.NAIS_IO_WORKLOAD_IDENTITY_PROVIDER }}
           service_account: ${{ env.SERVICE_ACCOUNT }}