Bump @babel/preset-env from 7.8.4 to 7.8.6

Bumps [@babel/preset-env](https://github.com/babel/babel) from 7.8.4 to 7.8.6.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/master/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/compare/v7.8.4...v7.8.6)

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

package.json

@@ -43,7 +43,7 @@
 		"@babel/plugin-syntax-dynamic-import": "^7.8.3",
 		"@babel/plugin-transform-runtime": "^7.8.3",
 		"@babel/polyfill": "^7.8.3",
-		"@babel/preset-env": "^7.8.4",
+		"@babel/preset-env": "^7.8.6",
 		"@vue/test-utils": "^1.0.0-beta.31",
 		"acorn": "^7.1.0",
 		"babel-core": "^7.0.0-bridge.0",