Update dependency @babel/core to v7.11.6

Author: renovate-bot

package-lock.json

@@ -56,7 +56,7 @@
     "nyc": "15.1.0"
   },
   "devDependencies": {
-    "@babel/core": "7.11.4",
+    "@babel/core": "7.11.6",
     "@cypress/webpack-preprocessor": "5.4.5",
     "babel-loader": "8.1.0",
     "babel-plugin-istanbul": "6.0.0",