fix(deps): update dependency @material-ui/core to v4.12.4

Author: renovate-bot

templates/ts-react-apollo-client/package.json

@@ -16,7 +16,7 @@
   },
   "dependencies": {
     "@apollo/client": "3.3.4",
-    "@material-ui/core": "4.11.2",
+    "@material-ui/core": "4.12.4",
     "graphql": "15.4.0",
     "react": "17.0.1",
     "react-dom": "17.0.1",