chore(deps): update devdependency happy-dom to v20

Author: renovate[bot]

package.json

@@ -50,7 +50,7 @@
     "changelogen": "^0.6.2",
     "crawler-user-agents": "^1.15.0",
     "eslint": "^9.32.0",
-    "happy-dom": "^18.0.1",
+    "happy-dom": "^20.0.3",
     "nuxt": "^4.0.2",
     "playwright": "^1.54.1",
     "typescript": "^5.8.3",