Update vitest monorepo to v4

Author: renovate[bot]

package.json

@@ -42,14 +42,14 @@
   "devDependencies": {
     "@typescript-eslint/eslint-plugin": "^8.0.0",
     "@typescript-eslint/parser": "^8.0.0",
-    "@vitest/coverage-v8": "^3.0.0",
+    "@vitest/coverage-v8": "^4.0.0",
     "eslint": "^9.0.0",
     "eslint-plugin-simple-import-sort": "^12.0.0",
     "jsdom": "^27.0.0",
     "tsconfig-paths": "4.2.0",
     "tsup": "^8.0.0",
     "typescript": "^5.1.6",
-    "vitest": "^3.0.0"
+    "vitest": "^4.0.0"
   },
   "homepage": "https://github.com/KirbyPaint/nanp-number-generator#readme",
   "lint-staged": {