fix(deps): update nextjs monorepo to v16 (major) (#4363)

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

apps/nextjs/src/components/layout/header.tsx

@@ -1,8 +1,8 @@
 import type { ReactNode } from "react";
-import Link from "next/link";
 import { AppShellHeader, Group, UnstyledButton } from "@mantine/core";
 
 import { Spotlight } from "@homarr/spotlight";
+import { Link } from "@homarr/ui";
 
 import { ClientBurger } from "./header/burger";
 import { DesktopSearchInput, MobileSearchButton } from "./header/search";