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

Author: renovate[bot]

package.json

@@ -27,7 +27,7 @@
     "@types/react-transition-group": "^4.4.11",
     "@vitejs/plugin-react": "^4.0.4",
     "autoprefixer": "^10.4.20",
-    "happy-dom": "^15.0.0",
+    "happy-dom": "^20.0.0",
     "postcss": "^8.4.47",
     "tailwindcss": "^3.4.14",
     "typescript": "5.9.3",