fix: update dependency next to v15 [security] (#551)

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

Author: renovate[bot]

package.json

@@ -39,7 +39,7 @@
     "@sentry/nextjs": "7.120.4",
     "dotenv": "17.2.3",
     "graphql": "16.12.0",
-    "next": "13.5.11",
+    "next": "15.5.10",
     "next-compose-plugins": "2.2.1",
     "next-i18next": "12.1.0",
     "next-pwa": "5.6.0",