build(deps-dev): Bump eslint from 9.20.0 to 9.21.0

Bumps [eslint](https://github.com/eslint/eslint) from 9.20.0 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@v9.20.0...v9.21.0)

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

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

Author: dependabot[bot]

package.json

@@ -45,7 +45,7 @@
     "@typescript-eslint/parser": "8.24.1",
     "@vitest/coverage-v8": "3.0.0-beta.3",
     "@vitest/ui": "3.0.0-beta.3",
-    "eslint": "9.20.0",
+    "eslint": "9.21.0",
     "eslint-config-prettier": "10.0.1",
     "eslint-plugin-svelte": "2.46.1",
     "globals": "16.0.0",