chore: Bump @mui/icons-material from 5.15.19 to 5.15.20

Bumps [@mui/icons-material](https://github.com/mui/material-ui/tree/HEAD/packages/mui-icons-material) from 5.15.19 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] <[email protected]>

package.json

@@ -12,7 +12,7 @@
     "@canonical/react-components": "^0.55.0",
     "@emotion/react": "^11.11.4",
     "@emotion/styled": "^11.11.5",
-    "@mui/icons-material": "^5.15.19",
+    "@mui/icons-material": "^5.15.20",
     "@mui/material": "^5.15.19",
     "@tanstack/react-query": "^5.45.0",
     "@types/node": "20.14.2",