Bump @actions/core from 1.8.0 to 1.8.1

Bumps [@actions/core](https://github.com/actions/toolkit/tree/HEAD/packages/core) from 1.8.0 to 1.8.1.
- [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
  update-type: version-update:semver-patch
...

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

package.json

@@ -22,7 +22,7 @@
   },
   "homepage": "https://github.com/sersoft-gmbh/swift-version-action#readme",
   "dependencies": {
-    "@actions/core": "^1.8.0",
+    "@actions/core": "^1.8.1",
     "@actions/exec": "^1.1.1"
   },
   "devDependencies": {