build(deps-dev): bump happy-dom from 19.0.2 to 20.0.0

Bumps [happy-dom](https://github.com/capricorn86/happy-dom) from 19.0.2 to 20.0.0.
- [Release notes](https://github.com/capricorn86/happy-dom/releases)
- [Commits](capricorn86/happy-dom@v19.0.2...v20.0.0)

---
updated-dependencies:
- dependency-name: happy-dom
  dependency-version: 20.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package.json

@@ -58,7 +58,7 @@
         "@types/nunjucks": "^3.2.6",
         "agadoo": "^3.0.0",
         "eslint": "^9.35.0",
-        "happy-dom": "^19.0.1",
+        "happy-dom": "^20.0.0",
         "prettier": "^3.6.2",
         "rimraf": "6.0.1",
         "tsup": "^8.5.0",