Update dependency @wordpress/env to v3.0.1

Author: renovate-bot

package-lock.json

@@ -35,7 +35,7 @@
   "main": "Gruntfile.js",
   "devDependencies": {
     "@lodder/grunt-postcss": "3.0.0",
-    "@wordpress/env": "3.0.0",
+    "@wordpress/env": "3.0.1",
     "autoprefixer": "10.2.3",
     "bourbon": "7.0.0",
     "cssnano": "4.1.10",