fix(deps): update mantine monorepo to v8 (major) (#3022)

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

packages/settings/package.json

@@ -26,7 +26,7 @@
     "@homarr/api": "workspace:^0.1.0",
     "@homarr/db": "workspace:^0.1.0",
     "@homarr/server-settings": "workspace:^0.1.0",
-    "@mantine/dates": "^7.17.7",
+    "@mantine/dates": "^8.0.0",
     "next": "15.3.1",
     "react": "19.1.0",
     "react-dom": "19.1.0"