chore(deps): update dependency eslint to v6.6.0 (#467)

Author: renovate[bot]

package-lock.json

@@ -53,7 +53,7 @@
     "core-js": "2.6.10",
     "cross-env": "6.0.3",
     "css-loader": "3.2.0",
-    "eslint": "6.5.1",
+    "eslint": "6.6.0",
     "eslint-config-standard": "14.1.0",
     "eslint-plugin-html": "6.0.0",
     "eslint-plugin-import": "2.18.2",