Update dependency @actions/core to v1.9.1 [SECURITY]

Author: renovate[bot]

package.json

@@ -31,7 +31,7 @@
     "sinon": "9.2.4"
   },
   "dependencies": {
-    "@actions/core": "1.2.6",
+    "@actions/core": "1.9.1",
     "@actions/github": "4.0.0",
     "axios": "0.21.1",
     "google-auth-library": "7.0.2",