Update dependency css-select to v6

Author: renovate[bot]

modules/html-lib/package.json

@@ -9,7 +9,7 @@
     "test": "jest"
   },
   "dependencies": {
-    "css-select": "5.1.0",
+    "css-select": "6.0.0",
     "domhandler": "5.0.3",
     "domutils": "3.1.0",
     "html-entities": "2.5.2",