chore(deps): update vitest monorepo to v4.0.16

Author: renovate[bot]

package.json

@@ -59,8 +59,8 @@
     "@types/proxy-from-env": "^1.0.4",
     "@types/semver": "^7.5.0",
     "@unleash/client-specification": "5.2.2",
-    "@vitest/coverage-v8": "4.0.14",
-    "@vitest/ui": "4.0.14",
+    "@vitest/coverage-v8": "4.0.16",
+    "@vitest/ui": "4.0.16",
     "del-cli": "^7.0.0",
     "husky": "^9.1.7",
     "lint-staged": "^16.2.7",