chore(frontend): bump @mui/system from 5.14.8 to 5.14.14 in /frontend

Bumps [@mui/system](https://github.com/mui/material-ui/tree/HEAD/packages/mui-system) from 5.14.8 to 5.14.14.
- [Release notes](https://github.com/mui/material-ui/releases)
- [Changelog](https://github.com/mui/material-ui/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mui/material-ui/commits/v5.14.14/packages/mui-system)

---
updated-dependencies:
- dependency-name: "@mui/system"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

frontend/package.json

@@ -13,7 +13,7 @@
     "@mui/icons-material": "^5.14.3",
     "@mui/lab": "^5.0.0-alpha.143",
     "@mui/material": "^5.14.8",
-    "@mui/system": "^5.14.5",
+    "@mui/system": "^5.14.14",
     "@mui/x-data-grid-premium": "^6.13.0",
     "graphiql": "^3.0.5",
     "graphql": "^16.8.0",