chore(deps): update dependency knip to v6 (#224)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -38,7 +38,7 @@
 		"cspell": "^9.0.0",
 		"eslint": "^10.0.0",
 		"husky": "^9.1.7",
-		"knip": "^5.40.0",
+		"knip": "^6.0.0",
 		"lint-staged": "^16.0.0",
 		"typescript": "^5.8.3",
 		"unocss": "^66.3.3",