Update vfile-location

Author: wooorm

package.json

@@ -32,7 +32,7 @@
  "nlcst-to-string": "^2.0.0",
  "repeat-string": "^1.5.2",
  "unist-util-position": "^3.0.0",
- "vfile-location": "^2.0.0"
+ "vfile-location": "^3.0.0"
  },
  "devDependencies": {
  "browserify": "^16.0.0",