chore(deps): update dependency rollup-plugin-visualizer to v6

Author: renovate[bot]

package.json

@@ -36,7 +36,7 @@
     "lefthook": "^1.8.2",
     "prettier": "^3.3.3",
     "prettier-plugin-astro": "^0.14.1",
-    "rollup-plugin-visualizer": "^5.12.0",
+    "rollup-plugin-visualizer": "^6.0.3",
     "wrangler": "^3.84.0"
   },
   "engines": {