fix: upgrade @actions/core from 1.10.0 to 1.11.1

Snyk has created this PR to upgrade @actions/core from 1.10.0 to 1.11.1.

See this package in npm:
@actions/core

See this project in Snyk:
https://app.eu.snyk.io/org/ukhsa-default/project/4e7685ff-9a93-4c72-8ffc-b24f92a09bc8?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot

package-lock.json

@@ -30,7 +30,7 @@
     "all": "npm run build && npm run format && npm run lint && npm run package && npm test"
   },
   "dependencies": {
-    "@actions/core": "^1.10.0",
+    "@actions/core": "^1.11.1",
     "@actions/github": "^5.1.1",
     "strip-color": "^0.1.0",
     "xml2js": "^0.4.23"