change workflow

.github/workflows/main.yml

@@ -10,12 +10,23 @@ on:
 
 jobs:
   build-and-sign:
-    runs-on: windows-2019
+    runs-on: windows-latest
  
     steps:
       - name: Checkout
         uses: actions/checkout@v4
  
+      # 安装 .NET Framework 4.0 Targeting Pack
+      - name: Install .NET Framework 4.0 Targeting Pack
+        shell: pwsh
+        run: |
+          $vsInstallPath = &"${env:ProgramFiles(x86)}\Microsoft Visual Studio\Installer\vswhere.exe" -latest -property installationPath
+          Write-Host "VS Install Path: $vsInstallPath"
+          $installerPath = "${env:ProgramFiles(x86)}\Microsoft Visual Studio\Installer\setup.exe"
+          & $installerPath modify --installPath $vsInstallPath `
+            --add Microsoft.Net.Component.4.TargetingPack `
+            --passive --norestart
+ 
       # .NET Framework 4.0 项目需用 MSBuild，不能用 dotnet build
       - name: Setup MSBuild
         uses: microsoft/setup-msbuild@v2