Bump @mui/material from 6.4.0 to 6.4.6 in /hospital_simulator

Bumps [@mui/material](https://github.com/mui/material-ui/tree/HEAD/packages/mui-material) from 6.4.0 to 6.4.6.
- [Release notes](https://github.com/mui/material-ui/releases)
- [Changelog](https://github.com/mui/material-ui/blob/v6.4.6/CHANGELOG.md)
- [Commits](https://github.com/mui/material-ui/commits/v6.4.6/packages/mui-material)

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

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

hospital_simulator/package.json

@@ -15,7 +15,7 @@
     "@emotion/styled": "^11.14.0",
     "@mui/icons-material": "^6.2.0",
     "@mui/lab": "6.0.0-beta.19",
-    "@mui/material": "^6.4.0",
+    "@mui/material": "^6.4.6",
     "@mui/x-data-grid": "^7.27.1",
     "@tabler/icons-react": "3.24.0",
     "@types/fhir": "^0.0.41",