fix(deps): update material-ui monorepo to v7

Author: renovate[bot]

frontend/package-lock.json

@@ -22,9 +22,9 @@
     "@mantine/ds": "^6.0.13",
     "@mantine/form": "^7.10.2",
     "@mantine/hooks": "^6.0.13",
-    "@mui/icons-material": "^5.11.16",
+    "@mui/icons-material": "^7.0.0",
     "@mui/lab": "^5.0.0-alpha.124",
-    "@mui/material": "^5.13.5",
+    "@mui/material": "^7.0.0",
     "@next/font": "^14.0.0",
     "@tabler/icons-react": "^3.0.0",
     "@types/node": "22.16.0",