fix(deps): update dependency react-syntax-highlighter to v16

Author: renovate[bot]

frontend/package-lock.json

@@ -24,7 +24,7 @@
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
     "react-router": "^7.1.5",
-    "react-syntax-highlighter": "^15.6.1",
+    "react-syntax-highlighter": "^16.0.0",
     "react-toastify": "^11.0.3"
   },
   "devDependencies": {