fix(deps): update nextjs monorepo to ^15.1.6 (#2063)

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

packages/spotlight/package.json

@@ -37,7 +37,7 @@
     "@mantine/spotlight": "^7.16.1",
     "@tabler/icons-react": "^3.29.0",
     "jotai": "^2.11.1",
-    "next": "15.1.5",
+    "next": "15.1.6",
     "react": "19.0.0",
     "react-dom": "19.0.0",
     "use-deep-compare-effect": "^1.8.1"