Bump @babel/core from 7.3.4 to 7.7.7

Bumps [@babel/core](https://github.com/babel/babel) from 7.3.4 to 7.7.7.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/master/CHANGELOG.md)
- [Commits](babel/babel@v7.3.4...v7.7.7)

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

Author: dependabot-preview[bot]

package-lock.json

@@ -24,7 +24,7 @@
 		"not ie <= 11"
 	],
 	"devDependencies": {
-		"@babel/core": "^7.3.4",
+		"@babel/core": "^7.7.7",
 		"@babel/preset-env": "^7.7.7",
 		"acorn": "^6.1.1",
 		"babel-eslint": "^10.0.3",