fix: remove peerDependency support for mui 7

Author: jgteske

packages/material-renderers/package.json

@@ -95,8 +95,8 @@
     "@emotion/styled": "^11.3.0",
     "@jsonforms/core": "3.9.0-alpha.0",
     "@jsonforms/react": "3.9.0-alpha.0",
-    "@mui/icons-material": "^7.3.0 || ^9.0.0",
-    "@mui/material": "^7.3.0 || ^9.0.0",
+    "@mui/icons-material": "^9.0.0",
+    "@mui/material": "^9.0.0",
     "@mui/x-date-pickers": "^9.0.0",
     "react": "^16.12.0 || ^17.0.0 || ^18.0.0 || ^19.0.0"
   },