fix(deps): update nextjs monorepo to v16

package.json

@@ -31,7 +31,7 @@
     "drizzle-orm": "^0.44.3",
     "lucide-react": "^0.548.0",
     "nanoid": "^5.1.5",
-    "next": "15.5.6",
+    "next": "16.0.0",
     "next-plausible": "^3.12.4",
     "pg": "^8.16.3",
     "pg-native": "^3.5.2",
@@ -44,7 +44,7 @@
   },
   "devDependencies": {
     "@eslint/js": "9.38.0",
-    "@next/eslint-plugin-next": "15.5.6",
+    "@next/eslint-plugin-next": "16.0.0",
     "@tailwindcss/postcss": "4.1.16",
     "@types/node": "22.18.12",
     "@types/pg": "8.15.5",
@@ -54,7 +54,7 @@
     "@typescript-eslint/parser": "8.46.2",
     "drizzle-kit": "0.31.5",
     "eslint": "9.38.0",
-    "eslint-config-next": "15.5.6",
+    "eslint-config-next": "16.0.0",
     "postcss": "8.5.6",
     "prettier": "3.6.2",
     "prettier-plugin-tailwindcss": "0.7.1",