fix(deps): update dependency postcss-preset-mantine to ^1.16.0 (#827)

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

apps/nextjs/package.json

@@ -59,7 +59,7 @@
     "jotai": "^2.9.0",
     "mantine-react-table": "2.0.0-beta.5",
     "next": "^14.2.5",
-    "postcss-preset-mantine": "^1.15.0",
+    "postcss-preset-mantine": "^1.16.0",
     "prismjs": "^1.29.0",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",