Bump @mui/icons-material from 5.15.13 to 5.15.20

Bumps [@mui/icons-material](https://github.com/mui/material-ui/tree/HEAD/packages/mui-icons-material) from 5.15.13 to 5.15.20.
- [Release notes](https://github.com/mui/material-ui/releases)
- [Changelog](https://github.com/mui/material-ui/blob/v5.15.20/CHANGELOG.md)
- [Commits](https://github.com/mui/material-ui/commits/v5.15.20/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] <support@github.com>

apps/smart-forms-app/package.json

@@ -36,7 +36,7 @@
     "@iconify/react": "^4.1.1",
     "@microlink/react-json-view": "^1.23.0",
     "@monaco-editor/react": "^4.6.0",
-    "@mui/icons-material": "^5.15.13",
+    "@mui/icons-material": "^5.15.20",
     "@mui/lab": "^5.0.0-alpha.151",
     "@mui/material": "^5.15.20",
     "@mui/x-date-pickers": "^6.10.1",