build(deps): bump google-github-actions/setup-gcloud from 2.1.4 to 2.1.5 (#779)

Bumps [google-github-actions/setup-gcloud](https://github.com/google-github-actions/setup-gcloud) from 2.1.4 to 2.1.5.
- [Release notes](https://github.com/google-github-actions/setup-gcloud/releases)
- [Changelog](https://github.com/google-github-actions/setup-gcloud/blob/main/CHANGELOG.md)
- [Commits](google-github-actions/setup-gcloud@77e7a55...6a7c903)

---
updated-dependencies:
- dependency-name: google-github-actions/setup-gcloud
  dependency-version: 2.1.5
  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>

Author: dependabot[bot]

.github/workflows/release.yml

@@ -137,7 +137,7 @@ jobs:
     - uses: google-github-actions/auth@b7593ed2efd1c1617e1b0254da33b86225adb2a5
       with:
         credentials_json: ${{ secrets.LINKERD_SITE_TOKEN }}
-    - uses: google-github-actions/setup-gcloud@77e7a554d41e2ee56fc945c52dfd3f33d12def9a
+    - uses: google-github-actions/setup-gcloud@6a7c903a70c8625ed6700fa299f5ddb4ca6022e9
     - uses: linkerd/dev/actions/setup-tools@v46
     - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
     - name: Publish edge helm chart