build(deps): bump @actions/github from 2.2.0 to 6.0.0

Bumps [@actions/github](https://github.com/actions/toolkit/tree/HEAD/packages/github) from 2.2.0 to 6.0.0.
- [Changelog](https://github.com/actions/toolkit/blob/main/packages/github/RELEASES.md)
- [Commits](https://github.com/actions/toolkit/commits/HEAD/packages/github)

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

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

package.json

@@ -19,7 +19,7 @@
   },
   "homepage": "https://github.com/aws-actions/stale-issue-cleanup/#readme",
   "dependencies": {
-    "@actions/github": "^2.2.0",
+    "@actions/github": "^6.0.0",
     "chalk": "^4.1.0",
     "dateformat": "^4.4.1",
     "loglevel": "^1.9.1",