chore(deps): update 1password/load-secrets-action action to v4

Author: renovate[bot]

.github/workflows/check.yaml

@@ -19,7 +19,7 @@ jobs:
     steps:
       - name: Fetch Secrets
         id: load_secrets
-        uses: 1password/load-secrets-action@v3
+        uses: 1password/load-secrets-action@v4
         env:
           OP_SERVICE_ACCOUNT_TOKEN: ${{ secrets.OP_SERVICE_TOKEN }}
           GITHUB_PAT_N8AGENT: op://heapsinfra/gha--github--n8agent-pat/credential