Bump @babel/core from 7.8.7 to 7.9.0 (#107)

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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Author: dependabot-preview[bot]

package-lock.json

@@ -18,7 +18,7 @@
     "react": "^16.13.0"
   },
   "devDependencies": {
-    "@babel/core": "^7.8.7",
+    "@babel/core": "^7.9.0",
     "@babel/preset-env": "^7.8.7",
     "@babel/preset-react": "^7.8.3",
     "@babel/preset-typescript": "^7.8.3",