build(deps): bump @mui/material from 7.2.0 to 7.3.4 in /dapp-example (#4524)

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dapp-example/package-lock.json

@@ -6,7 +6,7 @@
     "@emotion/react": "^11.14.0",
     "@emotion/styled": "^11.14.1",
     "@hashgraph/sdk": "^2.75.0",
-    "@mui/material": "^7.2.0",
+    "@mui/material": "^7.3.4",
     "ethers": "^6.15.0",
     "react": "^19.1.1",
     "react-dom": "^19.2.0",