Update dependency next to v16

Author: renovate[bot]

package.json

@@ -46,7 +46,7 @@
     "lucide-react": "^0.545.0",
     "mapbox-gl": "^3.15.0",
     "motion": "^12.23.24",
-    "next": "15.6.0-canary.39",
+    "next": "16.0.0-canary.1",
     "next-themes": "^0.4.6",
     "posthog-js": "^1.275.0",
     "posthog-node": "^5.9.5",