chore(deps): update dependency happy-dom to v16

Author: renovate[bot]

packages/web-component/package.json

@@ -42,7 +42,7 @@
     "eslint-config-prettier": "^9.1.0",
     "eslint-plugin-prettier": "^5.2.1",
     "eslint-plugin-simple-import-sort": "^12.1.1",
-    "happy-dom": "^14.12.3",
+    "happy-dom": "^16.3.0",
     "prettier": "^3.4.2",
     "rollup-plugin-visualizer": "^5.13.1",
     "typescript": "^5.7.2",