Update dependency @babel/core to v7.11.6 (#704)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

package-lock.json

@@ -19,7 +19,7 @@
         "typescript": "4.0.2"
     },
     "devDependencies": {
-        "@babel/core": "7.11.5",
+        "@babel/core": "7.11.6",
         "@babel/plugin-proposal-nullish-coalescing-operator": "7.10.4",
         "@babel/plugin-proposal-optional-chaining": "7.11.0",
         "@babel/preset-env": "7.11.5",