chore(deps-dev): Bump happy-dom from 20.8.3 to 20.8.4

Bumps [happy-dom](https://github.com/capricorn86/happy-dom) from 20.8.3 to 20.8.4.
- [Release notes](https://github.com/capricorn86/happy-dom/releases)
- [Commits](capricorn86/happy-dom@v20.8.3...v20.8.4)

---
updated-dependencies:
- dependency-name: happy-dom
  dependency-version: 20.8.4
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

package-lock.json

@@ -60,7 +60,7 @@
     "@types/node": "^25.3.5",
     "@vitest/coverage-v8": "^4.1.0",
     "eslint": "^9.39.2",
-    "happy-dom": "^20.8.3",
+    "happy-dom": "^20.8.4",
     "typescript": "^5.9.3",
     "vite": "^7.3.1",
     "vitest": "^4.0.7"