Bump @mui/material from 5.15.4 to 5.15.6

Bumps [@mui/material](https://github.com/mui/material-ui/tree/HEAD/packages/mui-material) from 5.15.4 to 5.15.6.
- [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/v5.15.6/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>

Author: dependabot[bot]

package-lock.json

@@ -7,7 +7,7 @@
         "@emotion/react": "^11.11.3",
         "@emotion/styled": "^11.11.0",
         "@mui/icons-material": "^5.15.6",
-        "@mui/material": "^5.15.4",
+        "@mui/material": "^5.15.6",
         "react": "^18.2.0",
         "react-dom": "^18.2.0",
         "react-redux": "^8.1.3",