fix: upgrade @mui/icons-material from 6.2.1 to 6.3.0

Snyk has created this PR to upgrade @mui/icons-material from 6.2.1 to 6.3.0.

See this package in npm:
@mui/icons-material

See this project in Snyk:
https://app.snyk.io/org/oph-snyk/project/9344ae72-895e-402d-b665-5753cdf5f49a?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot

package-lock.json

@@ -30,7 +30,7 @@
     "@emotion/cache": "^11.14.0",
     "@emotion/react": "^11.14.0",
     "@emotion/styled": "^11.14.0",
-    "@mui/icons-material": "^6.2.1",
+    "@mui/icons-material": "^6.3.0",
     "@mui/material": "^6.2.1",
     "@mui/material-nextjs": "^6.2.1",
     "@opetushallitus/oph-design-system": "github:opetushallitus/oph-design-system#v0.1.8",