chore: bump @mui/joy from 5.0.0-beta.48 to 5.0.0-beta.51 (#162)

Bumps [@mui/joy](https://github.com/mui/material-ui/tree/HEAD/packages/mui-joy) from 5.0.0-beta.48 to 5.0.0-beta.51.
- [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/HEAD/packages/mui-joy)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -13,7 +13,7 @@
     "@emotion/react": "^11.14.0",
     "@emotion/styled": "^11.14.0",
     "@markdoc/markdoc": "^0.4.0",
-    "@mui/joy": "5.0.0-beta.48",
+    "@mui/joy": "5.0.0-beta.51",
     "@radix-ui/react-dropdown-menu": "^2.1.4",
     "@usememos/mui": "0.0.1-alpha.25",
     "@vercel/speed-insights": "^1.1.0",