chore: install @vitest/coverage-v8

Author: barjin

package-lock.json

@@ -54,6 +54,7 @@
         "@types/git-url-parse": "^16.0.0",
         "@types/node": "^24.0.0",
         "@types/underscore": "^1.11.15",
+        "@vitest/coverage-v8": "^4.1.4",
         "ajv": "^8.17.1",
         "clone-deep": "^4.0.1",
         "commitlint": "^20.0.0",