Update babel monorepo to v7.8.7

Author: renovate-bot

package-lock.json

@@ -47,8 +47,8 @@
     "react": ">=16.8.1"
   },
   "devDependencies": {
-    "@babel/core": "7.8.6",
-    "@babel/preset-env": "7.8.6",
+    "@babel/core": "7.8.7",
+    "@babel/preset-env": "7.8.7",
     "@babel/preset-react": "7.8.3",
     "@babel/preset-typescript": "7.8.3",
     "@pika/pack": "0.3.7",