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

Author: renovate[bot]

package-lock.json

@@ -25,7 +25,7 @@
   "author": "YourNameOrOrganization",
   "license": "MIT",
   "dependencies": {
-    "@actions/core": "1.2.6",
+    "@actions/core": "1.9.1",
     "@actions/github": "5.1.1",
     "@octokit/webhooks": "12.0.3",
     "git-blame-json": "1.0.2",