Bump @octokit/rest from 20.1.1 to 21.0.0

Bumps [@octokit/rest](https://github.com/octokit/rest.js) from 20.1.1 to 21.0.0.
- [Release notes](https://github.com/octokit/rest.js/releases)
- [Commits](octokit/rest.js@v20.1.1...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>

js/apps/keycloak-server/package.json

@@ -16,7 +16,7 @@
   },
   "dependencies": {
     "@keycloak/keycloak-admin-client": "workspace:*",
-    "@octokit/rest": "^20.1.1",
+    "@octokit/rest": "^21.0.0",
     "@types/gunzip-maybe": "^1.4.2",
     "@types/tar-fs": "^2.0.4",
     "gunzip-maybe": "^1.4.2",