chore(deps-dev): bump happy-dom from 20.8.4 to 20.8.9

Bumps [happy-dom](https://github.com/capricorn86/happy-dom) from 20.8.4 to 20.8.9.
- [Release notes](https://github.com/capricorn86/happy-dom/releases)
- [Commits](capricorn86/happy-dom@v20.8.4...v20.8.9)

---
updated-dependencies:
- dependency-name: happy-dom
  dependency-version: 20.8.9
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -40,7 +40,7 @@
     "@vue/test-utils": "^2.4.6",
     "@vue/tsconfig": "^0.9.0",
     "browserslist": "^4.28.1",
-    "happy-dom": "^20.8.4",
+    "happy-dom": "^20.8.9",
     "typescript": "^5.9.3",
     "vite": "^7.3.1",
     "vitest": "^4.0.13"