Bump @webref/css from 6.19.0 to 6.19.1 (#2109)

Author: dependabot[bot]

package-lock.json

@@ -96,7 +96,7 @@
     "@types/webidl2": "^24.4.3",
     "@types/yargs": "^17.0.33",
     "@typescript-eslint/eslint-plugin": "7.18.0",
-    "@webref/css": "6.19.0",
+    "@webref/css": "6.19.1",
     "@webref/elements": "^2.4.0",
     "@webref/idl": "3.59.2",
     "c8": "10.1.3",