build(deps-dev): bump @typescript-eslint/eslint-plugin

Bumps [@typescript-eslint/eslint-plugin](https://github.com/typescript-eslint/typescript-eslint/tree/HEAD/packages/eslint-plugin) from 8.20.0 to 8.21.0.
- [Release notes](https://github.com/typescript-eslint/typescript-eslint/releases)
- [Changelog](https://github.com/typescript-eslint/typescript-eslint/blob/main/packages/eslint-plugin/CHANGELOG.md)
- [Commits](https://github.com/typescript-eslint/typescript-eslint/commits/v8.21.0/packages/eslint-plugin)

---
updated-dependencies:
- dependency-name: "@typescript-eslint/eslint-plugin"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package-lock.json

@@ -58,7 +58,7 @@
   "devDependencies": {
     "@markdoc/markdoc": "^0.4.0",
     "@types/jest": "^29.5.14",
-    "@typescript-eslint/eslint-plugin": "^8.20.0",
+    "@typescript-eslint/eslint-plugin": "^8.21.0",
     "@typescript-eslint/parser": "^8.20.0",
     "eslint": "^9.18.0",
     "jest": "^29.7.0",