chore(deps): update nextjs monorepo to v16 (#825)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -25,7 +25,7 @@
   "dependencies": {
     "@auth/prisma-adapter": "2.11.1",
     "@hookform/resolvers": "5.2.2",
-    "@next/env": "15.5.6",
+    "@next/env": "16.0.3",
     "@opentelemetry/exporter-metrics-otlp-grpc": "0.208.0",
     "@opentelemetry/exporter-trace-otlp-grpc": "0.208.0",
     "@opentelemetry/instrumentation-http": "0.208.0",
@@ -37,7 +37,7 @@
     "@prisma/client": "6.19.0",
     "@prisma/instrumentation": "6.19.0",
     "clsx": "2.1.1",
-    "next": "15.5.6",
+    "next": "16.0.3",
     "next-auth": "5.0.0-beta.30",
     "prisma": "6.19.0",
     "react": "19.2.0",