chore(deps-dev): Bump @babel/node in /build/frontend-legacy

Bumps [@babel/node](https://github.com/babel/babel/tree/HEAD/packages/babel-node) from 7.28.6 to 7.29.0.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/main/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/commits/v7.29.0/packages/babel-node)

---
updated-dependencies:
- dependency-name: "@babel/node"
  dependency-version: 7.29.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

build/frontend-legacy/package.json

@@ -104,7 +104,7 @@
     "webdav": "^5.8.0"
   },
   "devDependencies": {
-    "@babel/node": "^7.28.6",
+    "@babel/node": "^7.29.0",
     "@babel/plugin-transform-private-methods": "^7.28.6",
     "@babel/preset-typescript": "^7.28.5",
     "@nextcloud/babel-config": "^1.3.0",