chore(deps): bump antd from 6.6.7 to 6.6.8 in /frontend

Bumps [antd](https://github.com/ant-design/ant-design) from 6.6.7 to 6.6.8.
- [Release notes](https://github.com/ant-design/ant-design/releases)
- [Changelog](https://github.com/ant-design/ant-design/blob/master/CHANGELOG.en-US.md)
- [Commits](https://github.com/ant-design/ant-design/compare/6.6.7...6.6.8)

---
updated-dependencies:
- dependency-name: antd
  dependency-version: 6.6.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

frontend/package.json

@@ -42,7 +42,7 @@
     "@noble/hashes": "^2.4.0",
     "@tanstack/react-query": "^5.104.5",
     "@tanstack/react-query-devtools": "^5.104.5",
-    "antd": "^6.6.7",
+    "antd": "^6.6.8",
     "codemirror": "^6.0.2",
     "dayjs": "^1.11.23",
     "i18next": "^26.5.6",