Update dependency all-contributors-cli to v6.4.0

Author: renovate-bot

package-lock.json

@@ -38,7 +38,7 @@
     "@babel/preset-env": "7.4.4",
     "@babel/preset-react": "7.0.0",
     "@types/react": "16.8.16",
-    "all-contributors-cli": "6.3.1",
+    "all-contributors-cli": "6.4.0",
     "babel-eslint": "10.0.1",
     "babel-plugin-module-resolver": "3.2.0",
     "codecov": "3.3.0",