Bump @babel/core from 7.11.6 to 7.12.0

Bumps [@babel/core](https://github.com/babel/babel/tree/HEAD/packages/babel-core) from 7.11.6 to 7.12.0.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/main/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/commits/v7.12.0/packages/babel-core)

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

package.json

@@ -40,7 +40,7 @@
   ],
   "license": "MIT",
   "devDependencies": {
-    "@babel/core": "7.11.6",
+    "@babel/core": "7.12.0",
     "@babel/plugin-proposal-class-properties": "^7.10.4",
     "@babel/preset-env": "^7.11.5",
     "@babel/preset-react": "^7.10.4",