Bump @actions/core from 1.8.2 to 1.9.1

Bumps [@actions/core](https://github.com/actions/toolkit/tree/HEAD/packages/core) from 1.8.2 to 1.9.1.
- [Release notes](https://github.com/actions/toolkit/releases)
- [Changelog](https://github.com/actions/toolkit/blob/main/packages/core/RELEASES.md)
- [Commits](https://github.com/actions/toolkit/commits/HEAD/packages/core)

---
updated-dependencies:
- dependency-name: "@actions/core"
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -26,7 +26,7 @@
   "author": "Jochen Schalanda",
   "license": "MIT",
   "dependencies": {
-    "@actions/core": "^1.5.0",
+    "@actions/core": "^1.9.1",
     "@actions/exec": "^1.0.0",
     "@actions/http-client": "^1.0.8",
     "@actions/io": "^1.0.0",