Merge pull request #2300 from atom/dependabot/npm_and_yarn/babel/preset-env-7.6.3

Bump @babel/preset-env from 7.6.0 to 7.6.3

Author: smashwilson

package-lock.json

@@ -44,7 +44,7 @@
     "@babel/generator": "7.6.2",
     "@babel/plugin-proposal-class-properties": "7.5.5",
     "@babel/plugin-proposal-object-rest-spread": "7.6.2",
-    "@babel/preset-env": "7.6.0",
+    "@babel/preset-env": "7.6.3",
     "@babel/preset-react": "7.0.0",
     "babel-plugin-relay": "5.0.0",
     "bintrees": "1.0.2",