fix(deps): update nextjs monorepo to v15 (major) (#1844)

packages/ui/package.json

@@ -34,8 +34,9 @@
     "@mantine/hooks": "^7.15.2",
     "@tabler/icons-react": "^3.26.0",
     "mantine-react-table": "2.0.0-beta.7",
-    "next": "^14.2.22",
-    "react": "^19.0.0"
+    "next": "15.1.3",
+    "react": "19.0.0",
+    "react-dom": "19.0.0"
   },
   "devDependencies": {
     "@homarr/eslint-config": "workspace:^0.2.0",