deps(dev): bump happy-dom from 20.6.2 to 20.8.9

Bumps [happy-dom](https://github.com/capricorn86/happy-dom) from 20.6.2 to 20.8.9.
- [Release notes](https://github.com/capricorn86/happy-dom/releases)
- [Commits](capricorn86/happy-dom@v20.6.2...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.json

@@ -119,7 +119,7 @@
     "eslint-plugin-storybook": "10.2.8",
     "firebase-admin": "^13.5.0",
     "firebase-tools": "^15.5.1",
-    "happy-dom": "^20.6.2",
+    "happy-dom": "^20.8.9",
     "if-env": "^1.0.4",
     "postcss": "^8.5.6",
     "prettier": "^3.8.1",