Bump eslint from 8.57.1 to 9.39.1

Bumps [eslint](https://github.com/eslint/eslint) from 8.57.1 to 9.39.1.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Commits](eslint/eslint@v8.57.1...v9.39.1)

---
updated-dependencies:
- dependency-name: eslint
  dependency-version: 9.39.1
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

docs/package.json

@@ -44,7 +44,7 @@
         "@types/eslint-config-prettier": "^6.11.3",
         "@types/react": "^18.3.0",
         "@types/react-dom": "^18.3.0",
-        "eslint": "^8.57.0",
+        "eslint": "^9.39.1",
         "eslint-config-prettier": "^10.1.8",
         "eslint-plugin-mdx": "^3.6.2",
         "prettier": "^3.6.2",