Update vitest to ^4.0.0

Author: renovate[bot]

package.json

@@ -51,7 +51,7 @@
 		"typescript": "^5.9.2",
 		"typescript-eslint": "^8.39.0",
 		"vite": "^7.1.1",
-		"vitest": "^3.2.4"
+		"vitest": "^4.0.0"
 	},
 	"publishConfig": {
 		"access": "public"