chore(deps): bump google-github-actions/auth from 2.1.7 to 2.1.8 (coder#395)

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

Author: dependabot[bot]

.github/workflows/deploy-registry.yaml

@@ -20,7 +20,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Authenticate to Google Cloud
-        uses: google-github-actions/auth@6fc4af4b145ae7821d527454aa9bd537d1f2dc5f 
+        uses: google-github-actions/auth@71f986410dfbc7added4569d411d040a91dc6935 
         with:
           workload_identity_provider: projects/309789351055/locations/global/workloadIdentityPools/github-actions/providers/github
           service_account: [email protected]