chore(deps): update vitest monorepo to v4

Author: renovate-bot

apps/app/package.json

@@ -55,7 +55,7 @@
     "@types/react-dom": "19.0.4",
     "@typescript-eslint/eslint-plugin": "8.28.0",
     "@typescript-eslint/parser": "8.28.0",
-    "@vitest/coverage-v8": "2.1.9",
+    "@vitest/coverage-v8": "4.0.8",
     "eslint": "9.23.0",
     "eslint-config-next": "15.2.4",
     "eslint-plugin-react-compiler": "latest",
@@ -65,6 +65,6 @@
     "prettier-plugin-tailwindcss": "0.6.11",
     "tailwindcss": "3.4.17",
     "typescript": "5.8.2",
-    "vitest": "2.1.9"
+    "vitest": "4.0.8"
   }
 }