Bump @octokit/rest from 20.1.0 to 21.0.0

Bumps [@octokit/rest](https://github.com/octokit/rest.js) from 20.1.0 to 21.0.0.
- [Release notes](https://github.com/octokit/rest.js/releases)
- [Commits](octokit/rest.js@v20.1.0...v21.0.0)

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

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

package.json

@@ -29,7 +29,7 @@
     "@actions/core": "^1.10.1",
     "@actions/github": "^6.0.0",
     "@actions/http-client": "^2.2.1",
-    "@octokit/rest": "^20.1.0",
+    "@octokit/rest": "^21.0.0",
     "lodash": "^4.17.21",
     "uuid": "^9.0.1",
     "yaml": "^2.4.1"