fix(deps): update nextjs monorepo to v15 (#825)

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

Author: renovate[bot]

package.json

@@ -24,7 +24,7 @@
     "javascript-stringify": "^2.1.0",
     "keen-slider": "^6.8.6",
     "lodash": "^4.17.21",
-    "next": "^14.2.5",
+    "next": "^15.0.0",
     "node-gyp": "^11.0.0",
     "react": "^18.3.1",
     "react-blurhash": "^0.3.0",
@@ -42,7 +42,7 @@
     "@typescript-eslint/parser": "^8.0.0",
     "autoprefixer": "^10.4.20",
     "eslint": "^8.57.0",
-    "eslint-config-next": "^14.2.5",
+    "eslint-config-next": "^15.0.0",
     "eslint-config-prettier": "^9.1.0",
     "postcss": "^8.4.40",
     "prettier": "^3.3.3",