build(deps): bump next from 13.5.6 to 15.0.3

Bumps [next](https://github.com/vercel/next.js) from 13.5.6 to 15.0.3.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v13.5.6...v15.0.3)

---
updated-dependencies:
- dependency-name: next
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -41,7 +41,7 @@
     "gantt-task-react": "https://github.com/jorisdugue/gantt-task-react",
     "jdenticon": "^3.2.0",
     "jsonwebtoken": "^9.0.2",
-    "next": "^13.5.6",
+    "next": "^15.0.3",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
     "react-icons": "^5.0.1",