fix(deps): update nextjs monorepo to v15.4.1 (#3632)

Co-authored-by: homarr-renovate[bot] <158783068+homarr-renovate[bot]@users.noreply.github.com>

packages/spotlight/package.json

@@ -38,7 +38,7 @@
     "@mantine/spotlight": "^8.1.3",
     "@tabler/icons-react": "^3.34.0",
     "jotai": "^2.12.5",
-    "next": "15.3.5",
+    "next": "15.4.1",
     "react": "19.1.0",
     "react-dom": "19.1.0",
     "use-deep-compare-effect": "^1.8.1"