Bump next from 15.4.4 to 15.4.5 in /landing-page (#114)

Bumps [next](https://github.com/vercel/next.js) from 15.4.4 to 15.4.5.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v15.4.4...v15.4.5)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 15.4.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

landing-page/package-lock.json

@@ -20,7 +20,7 @@
     "gray-matter": "^4.0.3",
     "lucide-react": "^0.534.0",
     "motion": "^12.23.11",
-    "next": "15.4.4",
+    "next": "15.4.5",
     "next-themes": "^0.4.6",
     "react": "^19.0.0",
     "react-dom": "^19.1.1",