Bump @actions/artifact from 0.6.0 to 0.6.1

Bumps [@actions/artifact](https://github.com/actions/toolkit/tree/HEAD/packages/artifact) from 0.6.0 to 0.6.1.
- [Release notes](https://github.com/actions/toolkit/releases)
- [Changelog](https://github.com/actions/toolkit/blob/main/packages/artifact/RELEASES.md)
- [Commits](https://github.com/actions/toolkit/commits/HEAD/packages/artifact)

---
updated-dependencies:
- dependency-name: "@actions/artifact"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -24,7 +24,7 @@
   },
   "homepage": "https://github.com/pmd/pmd-github-action#readme",
   "dependencies": {
-    "@actions/artifact": "^0.6.0",
+    "@actions/artifact": "^0.6.1",
     "@actions/core": "^1.6.0",
     "@actions/exec": "^1.1.0",
     "@actions/github": "^5.0.0",