Bump @babel/preset-env from 7.11.5 to 7.12.1

Bumps [@babel/preset-env](https://github.com/babel/babel/tree/HEAD/packages/babel-preset-env) from 7.11.5 to 7.12.1.
- [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/v7.12.1/packages/babel-preset-env)

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

package.json

@@ -12,7 +12,7 @@
     "@babel/plugin-proposal-private-methods": "^7.12.1",
     "@babel/plugin-transform-modules-amd": "^7.12.1",
     "@babel/polyfill": "^7.12.1",
-    "@babel/preset-env": "^7.11.5",
+    "@babel/preset-env": "^7.12.1",
     "autoprefixer": "^9.8.6",
     "babel-loader": "^8.0.6",
     "browser-sync": "^2.26.13",