Bump @actions/core from 1.2.0 to 1.9.1 (#22)

Bumps [@actions/core](https://github.com/actions/toolkit/tree/HEAD/packages/core) from 1.2.0 to 1.9.1.
- [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] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package-lock.json

@@ -39,7 +39,7 @@
     "url": "https://github.com/guibranco/file-reader-action-v2/issues"
   },
   "dependencies": {
-    "@actions/core": "^1.2.0"
+    "@actions/core": "^1.9.1"
   },
   "devDependencies": {
     "@types/jest": "^24.0.23",