Bump @mui/icons-material from 6.1.8 to 6.1.9 (#209)

Bumps [@mui/icons-material](https://github.com/mui/material-ui/tree/HEAD/packages/mui-icons-material) from 6.1.8 to 6.1.9.
- [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/v6.1.9/packages/mui-icons-material)

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

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package.json

@@ -48,7 +48,7 @@
     "@emotion/styled": "^11.13.5",
     "@haleos/ra-language-german": "^1.0.0",
     "@haxqer/ra-language-chinese": "^4.16.2",
-    "@mui/icons-material": "^6.1.8",
+    "@mui/icons-material": "^6.1.9",
     "@mui/material": "^6.1.9",
     "@mui/utils": "^5.16.8",
     "@tanstack/react-query": "^5.62.0",