fix(deps): update dependency three-custom-shader-material to v6

Author: renovate[bot]

package.json

@@ -65,7 +65,7 @@
     "camera-controls": "^2.9.0",
     "stats-gl": "^2.0.1",
     "stats.js": "^0.17.0",
-    "three-custom-shader-material": "^5.4.0",
+    "three-custom-shader-material": "^6.0.0",
     "three-stdlib": "^2.34.0"
   },
   "devDependencies": {