Update @mui/material requirement from ^5.13.6 to ^5.14.7 in /src-admin

Updates the requirements on [@mui/material](https://github.com/mui/material-ui/tree/HEAD/packages/mui-material) to permit the latest version.
- [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/v5.14.7/packages/mui-material)

---
updated-dependencies:
- dependency-name: "@mui/material"
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

src-admin/package.json

@@ -11,7 +11,7 @@
         "@emotion/react": "^11.11.1",
         "@emotion/styled": "^11.11.0",
         "@iobroker/adapter-react-v5": "^4.1.2",
-        "@mui/material": "^5.13.6",
+        "@mui/material": "^5.14.7",
         "@mui/styles": "^5.13.2",
         "@mui/icons-material": "^5.11.16",
         "prop-types": "^15.8.1",