fix(deps): update nextjs monorepo to v16

src/backend/server/src/Todo.Api/Todo.Api.csproj

@@ -7,7 +7,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="Swashbuckle.AspNetCore" Version="7.2.0"/>
+        <PackageReference Include="Swashbuckle.AspNetCore" Version="7.3.1"/>
     </ItemGroup>
 
     <ItemGroup>

src/client/package.json

@@ -9,27 +9,27 @@
   },
   "dependencies": {
     "@microsoft/signalr": "8.0.7",
-    "@reduxjs/toolkit": "2.5.1",
+    "@reduxjs/toolkit": "2.6.0",
     "@tippyjs/react": "4.2.6",
-    "axios": "1.7.9",
-    "next": "15.1.7",
+    "axios": "1.8.1",
+    "next": "16.1.6",
     "next-pwa": "5.6.0",
     "react": "19.0.0",
     "react-dom": "19.0.0",
     "react-redux": "9.2.0",
     "react-textarea-autosize": "8.5.7",
-    "tailwindcss": "4.0.8"
+    "tailwindcss": "4.0.10"
   },
   "devDependencies": {
     "@types/react": "19.0.10",
     "@types/react-redux": "7.1.34",
     "autoprefixer": "10.4.20",
     "cssnano": "7.0.6",
-    "eslint": "9.20.1",
-    "eslint-config-next": "15.1.7",
+    "eslint": "9.21.0",
+    "eslint-config-next": "16.1.6",
     "postcss": "8.5.3",
     "postcss-import": "16.1.0",
-    "prettier": "3.5.1",
-    "typescript": "5.7.3"
+    "prettier": "3.5.3",
+    "typescript": "5.8.2"
   }
 }