fix(package): update vfile-reporter to version 4.0.0

Author: greenkeeper[bot]

package.json

@@ -51,7 +51,7 @@
     "unist-builder": "^1.0.0",
     "unist-util-visit": "^1.0.1",
     "vfile": "^2.0.0",
-    "vfile-reporter": "^3.0.0",
+    "vfile-reporter": "^4.0.0",
     "vfile-sort": "^2.0.0",
     "vinyl": "^2.0.0",
     "vinyl-fs": "^2.3.1",