Bump @webref/idl from 3.55.4 to 3.56.0 (#1960)

Author: dependabot[bot]

package-lock.json

@@ -98,7 +98,7 @@
     "@typescript-eslint/eslint-plugin": "7.18.0",
     "@webref/css": "6.17.2",
     "@webref/elements": "^2.4.0",
-    "@webref/idl": "3.55.4",
+    "@webref/idl": "3.56.0",
     "c8": "10.1.2",
     "chai": "4.5.0",
     "chai-as-promised": "8.0.0",