build(deps-dev): bump happy-dom from 11.2.0 to 12.1.2 in /frontend

Bumps [happy-dom](https://github.com/capricorn86/happy-dom) from 11.2.0 to 12.1.2.
- [Release notes](https://github.com/capricorn86/happy-dom/releases)
- [Commits](https://github.com/capricorn86/happy-dom/compare/v11.2.0...v12.1.2)

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

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

frontend/package-lock.json

@@ -53,7 +53,7 @@
         "eslint-plugin-import": "^2.28.1",
         "eslint-plugin-matrix-org": "^1.2.1",
         "eslint-plugin-prettier": "^5.0.0",
-        "happy-dom": "^11.2.0",
+        "happy-dom": "^12.1.2",
         "postcss": "^8.4.30",
         "prettier": "3.0.3",
         "react-test-renderer": "^18.2.0",
@@ -14446,9 +14446,9 @@
       }
     },
     "node_modules/happy-dom": {
-      "version": "11.2.0",
-      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-11.2.0.tgz",
-      "integrity": "sha512-z4PshcYIIH6SkymSNRcDFwYUJOENe+FOQDx5BbHgg/wQUgxF5p9I9/BN45Jff34bbhXV8yJgkC5N99eyOzXK3w==",
+      "version": "12.1.2",
+      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-12.1.2.tgz",
+      "integrity": "sha512-Ee0MdMXAMzfmZ4gLe33iKt8Rza5Fkyr+DxtHzCiBihTkI8JoX2XOfPdSsKDr0JAoMNYdMrFqIDYBoHq5DJqDXg==",
       "dev": true,
       "dependencies": {
         "css.escape": "^1.5.1",

frontend/package.json

@@ -60,7 +60,7 @@
     "eslint-plugin-import": "^2.28.1",
     "eslint-plugin-matrix-org": "^1.2.1",
     "eslint-plugin-prettier": "^5.0.0",
-    "happy-dom": "^11.2.0",
+    "happy-dom": "^12.1.2",
     "postcss": "^8.4.30",
     "prettier": "3.0.3",
     "react-test-renderer": "^18.2.0",