Update CSS preprocessors to v11

Author: renovate[bot]

package.json

@@ -54,7 +54,7 @@
         "gscan": "6.2.1",
         "postcss": "8.5.15",
         "postcss-import": "16.1.1",
-        "postcss-preset-env": "10.6.1",
+        "postcss-preset-env": "11.3.0",
         "rollup": "4.61.1",
         "rollup-plugin-livereload": "2.0.5",
         "rollup-plugin-postcss": "4.0.2"