Update dependency @actions/core to v1.9.0

Author: renovate-bot

package-lock.json

@@ -30,7 +30,7 @@
   "dependencies": {
     "@actions/artifact": "1.1.0",
     "@actions/cache": "2.0.6",
-    "@actions/core": "1.8.2",
+    "@actions/core": "1.9.0",
     "@actions/exec": "1.1.1",
     "@actions/github": "5.0.3",
     "@actions/glob": "0.3.0",