Bump @wordpress/env from 4.6.0 to 4.8.0 (#1442)

Bumps [@wordpress/env](https://github.com/WordPress/gutenberg/tree/HEAD/packages/env) from 4.6.0 to 4.8.0.
- [Release notes](https://github.com/WordPress/gutenberg/releases)
- [Changelog](https://github.com/WordPress/gutenberg/blob/trunk/packages/env/CHANGELOG.md)
- [Commits](https://github.com/WordPress/gutenberg/commits/@wordpress/env@4.8.0/packages/env)

---
updated-dependencies:
- dependency-name: "@wordpress/env"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -11,7 +11,7 @@
     "url": "https://github.com/GlotPress/GlotPress/issues"
   },
   "devDependencies": {
-    "@wordpress/env": "^4.6.0",
+    "@wordpress/env": "^4.8.0",
     "@wordpress/scripts": "^22.5.0",
     "grunt": "^1.5.3",
     "grunt-contrib-cssmin": "^4.0.0",