Bump @mui/styles from 5.11.7 to 5.15.15

Bumps [@mui/styles](https://github.com/mui/material-ui/tree/HEAD/packages/mui-styles) from 5.11.7 to 5.15.15.
- [Release notes](https://github.com/mui/material-ui/releases)
- [Changelog](https://github.com/mui/material-ui/blob/next/CHANGELOG.md)
- [Commits](https://github.com/mui/material-ui/commits/v5.15.15/packages/mui-styles)

---
updated-dependencies:
- dependency-name: "@mui/styles"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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