chore(deps): update vitest monorepo to v4.0.9

Author: renovate[bot]

package-lock.json

@@ -37,14 +37,14 @@
     "test": "npm run lint && vitest run --coverage"
   },
   "devDependencies": {
-    "@vitest/coverage-v8": "4.0.8",
+    "@vitest/coverage-v8": "4.0.9",
     "eslint": "9.39.1",
     "eslint-config-scratch": "12.0.31",
     "prettier": "3.6.2",
     "typescript": "5.9.3",
     "unplugin-dts": "1.0.0-beta.6",
     "vite": "npm:rolldown-vite@7.1.14",
-    "vitest": "4.0.8"
+    "vitest": "4.0.9"
   },
   "overrides": {
     "vite": "npm:rolldown-vite@7.1.14"