chore(deps): update vitest monorepo to v4

Author: renovate[bot]

package.json

@@ -33,7 +33,7 @@
     "@biomejs/biome": "^1.9.4",
     "@types/bun": "^1.2.9",
     "@types/node": "^22.14.1",
-    "@vitest/coverage-v8": "^3.1.1",
+    "@vitest/coverage-v8": "^4.0.17",
     "automd": "^0.4.0",
     "changelogen": "^0.6.1",
     "eslint": "^9.24.0",
@@ -42,7 +42,7 @@
     "prettier": "^3.5.3",
     "typescript": "^5.8.3",
     "unbuild": "^3.5.0",
-    "vitest": "^3.1.1"
+    "vitest": "^4.0.17"
   },
   "packageManager": "pnpm@10.8.0"
 }