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

Bumps [@typescript-eslint/eslint-plugin](https://github.com/typescript-eslint/typescript-eslint/tree/HEAD/packages/eslint-plugin) from 6.20.0 to 6.21.0.
- [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/v6.21.0/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] <support@github.com>

Author: dependabot[bot]

website/package-lock.json

@@ -36,7 +36,7 @@
     "@docusaurus/tsconfig": "^3.1.1",
     "@docusaurus/types": "^3.1.1",
     "@types/node": "^20.11.10",
-    "@typescript-eslint/eslint-plugin": "^6.20.0",
+    "@typescript-eslint/eslint-plugin": "^6.21.0",
     "@typescript-eslint/parser": "^6.21.0",
     "eslint": "^8.56.0",
     "eslint-import-resolver-typescript": "^3.6.1",