chore(deps-dev): bump typescript-eslint from 8.15.0 to 8.21.0

Bumps [typescript-eslint](https://github.com/typescript-eslint/typescript-eslint/tree/HEAD/packages/typescript-eslint) from 8.15.0 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/typescript-eslint/CHANGELOG.md)
- [Commits](https://github.com/typescript-eslint/typescript-eslint/commits/v8.21.0/packages/typescript-eslint)

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

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

Author: dependabot[bot]

package.json

@@ -43,6 +43,6 @@
     "husky": "^9.1.7",
     "prettier": "^3.3.3",
     "typescript": "^5.6.3",
-    "typescript-eslint": "^8.15.0"
+    "typescript-eslint": "^8.21.0"
   }
 }