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

Author: renovate[bot]

package.json

@@ -81,7 +81,7 @@
     "@vue/runtime-core": "^3.4.19",
     "del-cli": "^5.1.0",
     "eslint": "^8.56.0",
-    "happy-dom": "^15.7.4",
+    "happy-dom": "^20.0.10",
     "prettier": "^3.2.5",
     "prettier-plugin-jsdoc": "^1.3.0",
     "typescript": "^5.3.3",