Update nextjs monorepo to v15.2.0 (#876)

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

Author: renovate[bot]

package.json

@@ -30,7 +30,7 @@
     "@vercel/analytics": "1.4.1",
     "hosted-git-info": "8.0.2",
     "lru-cache": "10.4.3",
-    "next": "15.1.7",
+    "next": "15.2.0",
     "react": "19.0.0",
     "react-dom": "19.0.0",
     "styled-components": "6.1.15",
@@ -40,7 +40,7 @@
   "devDependencies": {
     "@kachkaev/eslint-config-react": "0.6.0",
     "@kachkaev/markdownlint-config": "0.5.0",
-    "@next/eslint-plugin-next": "15.1.7",
+    "@next/eslint-plugin-next": "15.2.0",
     "@tsconfig/next": "2.0.3",
     "@tsconfig/strictest": "2.0.5",
     "@types/hosted-git-info": "3.0.5",