Update dependency next to v15.5.4 (#22)

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

Author: renovate[bot]

bun.lockb

@@ -21,7 +21,7 @@
     "framer-motion": "^12.0.0",
     "lru-cache": "^11.0.2",
     "lucide-react": "^0.545.0",
-    "next": "15.4.7",
+    "next": "15.5.4",
     "next-plausible": "^3.12.4",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",