Bump @babel/core from 7.8.7 to 7.9.0 (#145)

Bumps [@babel/core](https://github.com/babel/babel) from 7.8.7 to 7.9.0.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/master/CHANGELOG.md)
- [Commits](babel/babel@v7.8.7...v7.9.0)

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package.json

@@ -64,7 +64,7 @@
   },
   "devDependencies": {
     "@babel/cli": "^7.8.4",
-    "@babel/core": "^7.8.7",
+    "@babel/core": "^7.9.0",
     "@babel/preset-env": "^7.9.0",
     "@sentry/webpack-plugin": "^1.10.0",
     "@types/jest": "^25.1.4",