Bump @babel/preset-env from 7.7.4 to 7.7.6

Bumps [@babel/preset-env](https://github.com/babel/babel) from 7.7.4 to 7.7.6.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/master/CHANGELOG.md)
- [Commits](babel/babel@v7.7.4...v7.7.6)

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

package.json

@@ -39,7 +39,7 @@
 	},
 	"devDependencies": {
 		"@babel/core": "^7.7.5",
-		"@babel/preset-env": "^7.7.4",
+		"@babel/preset-env": "^7.7.6",
 		"babel-eslint": "^10.0.3",
 		"babel-loader": "^8.0.6",
 		"esdoc": "^1.1.0",