chore(deps-dev): bump @babel/preset-env from 7.6.2 to 7.6.3

Bumps [@babel/preset-env](https://github.com/babel/babel) from 7.6.2 to 7.6.3.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/master/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/compare/v7.6.2...v7.6.3)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -17,7 +17,7 @@
   },
   "devDependencies": {
     "@babel/core": "^7.6.2",
-    "@babel/preset-env": "^7.6.2",
+    "@babel/preset-env": "^7.6.3",
     "@babel/preset-react": "^7.6.3",
     "autoprefixer": "^9.6.4",
     "babel-loader": "^8.0.6",