chore(deps): update google-github-actions/get-secretmanager-secrets action to v2.1.2

Author: renovate[bot]

.github/workflows/workflow.yaml

@@ -79,7 +79,7 @@ jobs:
           credentials_json: ${{ secrets.MAINNET_SERVICE_ACCOUNT_KEY }}
       - name: Fetch Secrets
         id: slack-webhook
-        uses: google-github-actions/[email protected].1
+        uses: google-github-actions/[email protected].2
         with:
           # This can point to any slack webhook URL stored in GC Secret Manager
           secrets: |-