chore: update dependency eslint to v6.7.1

Author: renovate-bot

package-lock.json

@@ -103,7 +103,7 @@
     "babel-preset-env": "1.7.0",
     "babel-register": "6.26.0",
     "babel-runtime": "6.26.0",
-    "eslint": "6.5.1",
+    "eslint": "6.7.1",
     "eslint-config-prettier": "6.7.0",
     "eslint-plugin-prettier": "3.1.1",
     "flow-bin": "0.110.0",