Bump @mui/styles from 5.14.14 to 5.14.15 in /src

Bumps [@mui/styles](https://github.com/mui/material-ui/tree/HEAD/packages/mui-styles) from 5.14.14 to 5.14.15.
- [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/v5.14.15/packages/mui-styles)

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

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

src/package.json

@@ -5,7 +5,7 @@
     "dependencies": {
         "@iobroker/adapter-react-v5": "^4.6.7",
         "@mui/material": "5.14.14",
-        "@mui/styles": "5.14.14",
+        "@mui/styles": "5.14.15",
         "@mui/icons-material": "^5.14.15",
         "@sentry/browser": "^7.75.1",
         "babel-eslint": "^10.1.0",