Bump @babel/preset-env from 7.15.6 to 7.15.8

Bumps [@babel/preset-env](https://github.com/babel/babel/tree/HEAD/packages/babel-preset-env) from 7.15.6 to 7.15.8.
- [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/v7.15.8/packages/babel-preset-env)

---
updated-dependencies:
- dependency-name: "@babel/preset-env"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

package.json

@@ -11,7 +11,7 @@
   },
   "devDependencies": {
     "@babel/core": "^7.15.5",
-    "@babel/preset-env": "^7.15.6",
+    "@babel/preset-env": "^7.15.8",
     "autoprefixer": "^9.8.8",
     "braces": "^3.0.2",
     "browser-sync": "^2.27.5",