chore: bump eslint from 7.32.0 to 9.21.0

Bumps [eslint](https://github.com/eslint/eslint) from 7.32.0 to 9.21.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/main/CHANGELOG.md)
- [Commits](eslint/eslint@v7.32.0...v9.21.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

packages/cspell-eslint-plugin/package.json

@@ -86,7 +86,7 @@
     "@types/mocha": "^10.0.10",
     "@typescript-eslint/parser": "^8.24.1",
     "@typescript-eslint/types": "^8.24.1",
-    "eslint": "~9.19.0",
+    "eslint": "~9.21.0",
     "eslint-plugin-jsonc": "^2.19.1",
     "eslint-plugin-mdx": "^3.1.5",
     "eslint-plugin-n": "^17.15.1",