chore(deps): update google-github-actions/setup-gcloud action to v2.1.5 (#1151)

Co-authored-by: grafanarenovatebot[bot] <146220760+grafanarenovatebot[bot]@users.noreply.github.com>

Author: grafanarenovatebot[bot]

actions/login-to-gar/action.yaml

@@ -54,7 +54,7 @@ runs:
 
     - name: Setup `gcloud` CLI
       if: ${{ !steps.check_if_gcloud_is_installed.outputs.gcloud-installed }}
-      uses: google-github-actions/setup-gcloud@77e7a554d41e2ee56fc945c52dfd3f33d12def9a # v2.1.4
+      uses: google-github-actions/setup-gcloud@6a7c903a70c8625ed6700fa299f5ddb4ca6022e9 # v2.1.5
       with:
         # Accept any version
         version: