test: improve test coverage

Author: azat-io

package.json

@@ -58,7 +58,7 @@
     "@humanwhocodes/social-changelog": "^0.4.0",
     "@types/estree": "^1.0.8",
     "@types/node": "^24.5.2",
-    "@vitest/coverage-v8": "^3.2.4",
+    "@vitest/coverage-v8": "^4.0.8",
     "changelogen": "^0.6.2",
     "changelogithub": "^13.16.0",
     "clean-publish": "^5.2.2",
@@ -76,7 +76,7 @@
     "vite": "^7.1.7",
     "vite-plugin-dts": "^4.5.4",
     "vite-plugin-prettier-format": "^1.0.0",
-    "vitest": "^3.2.4"
+    "vitest": "^4.0.8"
   },
   "peerDependencies": {
     "eslint": ">=8.0.0"