Update nextjs monorepo to v16

Author: renovate[bot]

package.json

@@ -31,7 +31,7 @@
     "javascript-stringify": "^2.1.0",
     "keen-slider": "^6.8.6",
     "lodash": "^4.17.21",
-    "next": "^15.5.2",
+    "next": "^16.0.0",
     "node-gyp": "^11.2.0",
     "react": "^18.3.1",
     "react-blurhash": "^0.3.0",
@@ -55,7 +55,7 @@
     "@typescript-eslint/parser": "^8.32.0",
     "autoprefixer": "^10.4.21",
     "eslint": "^8.57.1",
-    "eslint-config-next": "^15.3.1",
+    "eslint-config-next": "^16.0.0",
     "eslint-config-prettier": "^10.1.2",
     "husky": "^9.1.7",
     "lint-staged": "^16.0.0",