chore(deps): bump @mui/icons-material from 6.1.5 to 6.1.8

Bumps [@mui/icons-material](https://github.com/mui/material-ui/tree/HEAD/packages/mui-icons-material) from 6.1.5 to 6.1.8.
- [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/v6.1.8/packages/mui-icons-material)

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

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

package.json

@@ -22,7 +22,7 @@
     "@emotion/styled": "^11.13.0",
     "@mdx-js/loader": "^3.0.1",
     "@mdx-js/react": "^3.0.1",
-    "@mui/icons-material": "^6.1.5",
+    "@mui/icons-material": "^6.1.8",
     "@mui/material": "^6.1.5",
     "@next/mdx": "^14.1.0",
     "@tanstack/react-table": "^8.19.2",