Use fork of cssstyle

This fork merges jsdom/cssstyle#140.

Author: cdoublev

package.json

@@ -24,7 +24,7 @@
     "acorn": "^8.2.4",
     "acorn-globals": "^6.0.0",
     "cssom": "^0.4.4",
-    "cssstyle": "^2.3.0",
+    "cssstyle": "cdoublev/cssstyle",
     "data-urls": "^2.0.0",
     "decimal.js": "^10.2.1",
     "domexception": "^2.0.1",