Update material-ui monorepo to v7

Author: renovate[bot]

package.json

@@ -11,8 +11,8 @@
     "@emotion/cache": "^11.14.0",
     "@emotion/react": "^11.14.0",
     "@emotion/styled": "^11.14.0",
-    "@mui/icons-material": "^6.4.8",
-    "@mui/material": "^6.4.8",
+    "@mui/icons-material": "^7.0.0",
+    "@mui/material": "^7.0.0",
     "@mui/material-nextjs": "^7.0.0",
     "framer-motion": "^12.5.0",
     "gray-matter": "^4.0.3",