chore(deps): update dependency knip to v6.12.0

Author: renovate[bot]

package.json

@@ -40,7 +40,7 @@
 	"devDependencies": {
 		"@biomejs/biome": "2.4.13",
 		"@types/node": "24.12.2",
-		"knip": "6.6.2",
+		"knip": "6.12.0",
 		"prettier": "3.8.3",
 		"typescript": "5.9.3",
 		"vite": "8.0.10",