fix(deps): update all dependencies

src/backend/server/Dockerfile

@@ -1,9 +1,9 @@
-FROM mcr.microsoft.com/dotnet/aspnet:10.0 AS base
+FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS base
 WORKDIR /app
 EXPOSE 80
 EXPOSE 443
 
-FROM mcr.microsoft.com/dotnet/sdk:10.0 AS build
+FROM mcr.microsoft.com/dotnet/sdk:9.0 AS build
 WORKDIR /src
 
 COPY *.sln .

src/backend/server/global.json

@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "10.0.100",
+    "version": "9.0.200",
     "rollForward": "latestMajor",
     "allowPrerelease": true
   }

src/backend/server/src/Todo.Core/Todo.Core.csproj

@@ -14,7 +14,7 @@
     </ItemGroup>
 
     <ItemGroup>
-        <PackageReference Include="Mediatr" Version="12.4.1" />
+        <PackageReference Include="Mediatr" Version="14.0.0" />
     </ItemGroup>
 
 </Project>

src/backend/server/src/Todo.Infrastructure/Todo.Infrastructure.csproj

@@ -11,7 +11,7 @@
     </ItemGroup>
 
     <ItemGroup>
-        <PackageReference Include="Microsoft.AspNetCore.Authentication.OpenIdConnect" Version="9.0.2"/>
+        <PackageReference Include="Microsoft.AspNetCore.Authentication.OpenIdConnect" Version="10.0.0"/>
     </ItemGroup>
 
     <ItemGroup>

src/client/package.json

@@ -8,28 +8,28 @@
     "lint": "next lint"
   },
   "dependencies": {
-    "@microsoft/signalr": "10.0.0",
-    "@reduxjs/toolkit": "2.6.0",
+    "@microsoft/signalr": "8.0.7",
+    "@reduxjs/toolkit": "2.11.0",
     "@tippyjs/react": "4.2.6",
-    "axios": "1.8.1",
+    "axios": "1.13.2",
     "next": "15.2.1",
     "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",
+    "react-textarea-autosize": "8.5.9",
     "tailwindcss": "4.0.10"
   },
   "devDependencies": {
     "@types/react": "19.0.10",
     "@types/react-redux": "7.1.34",
-    "autoprefixer": "10.4.20",
-    "cssnano": "7.0.6",
+    "autoprefixer": "10.4.22",
+    "cssnano": "7.1.2",
     "eslint": "9.21.0",
     "eslint-config-next": "15.2.1",
-    "postcss": "8.5.3",
-    "postcss-import": "16.1.0",
-    "prettier": "3.5.3",
-    "typescript": "5.8.2"
+    "postcss": "8.5.6",
+    "postcss-import": "16.1.1",
+    "prettier": "3.7.4",
+    "typescript": "5.9.3"
   }
 }