chore(deps): update dependency @vitest/coverage-v8 to v4

Author: renovate[bot]

package.json

@@ -72,7 +72,7 @@
     "@rslib/core": "^0.15.0",
     "@rspress/plugin-typedoc": "^1.45.6",
     "@types/glob": "^9.0.0",
-    "@vitest/coverage-v8": "^3.0.0",
+    "@vitest/coverage-v8": "^4.0.0",
     "bumpp": "^10.2.0",
     "chalk": "^5.4.1",
     "gh-pages": "^6.3.0",