test: change coverage provider from v8 to istanbul

Author: femincan

package.json

@@ -47,7 +47,7 @@
   "devDependencies": {
     "@typescript-eslint/eslint-plugin": "^7.14.1",
     "@typescript-eslint/parser": "^7.14.1",
-    "@vitest/coverage-v8": "^1.6.0",
+    "@vitest/coverage-istanbul": "^1.6.0",
     "@vitest/ui": "^1.6.0",
     "eslint": "^8.57.0",
     "eslint-config-airbnb-base": "^15.0.0",