Install all .NET versions in pipeline to fix run tests task

Author: msbw2

.github/workflows/dotnetcore.yml

@@ -28,7 +28,17 @@ jobs:
     steps:
     - name: Checkout repository
       uses: actions/[email protected]
-        
+
+    - name: Setup .NET 6.0.x
+      uses: actions/[email protected]
+      with:
+        dotnet-version: 6.0.x
+
+    - name: Setup .NET 8.0.x
+      uses: actions/[email protected]
+      with:
+        dotnet-version: 8.0.x
+
     - name: Setup .NET 9.x
       uses: actions/[email protected]
       with:

build/template-Build-run-tests-sign.yml

@@ -7,6 +7,24 @@ steps:
 - script: echo $(MicrosoftIdentityModelVersion)
   displayName: 'display MicrosoftIdentityModelVersion'
 
+- task: UseDotNet@2
+  displayName: 'Use .Net Core SDK 2.x'
+  inputs:
+    version: 2.x
+    installationPath: $(Agent.ToolsDirectory)/dotnet
+
+- task: UseDotNet@2
+  displayName: 'Use .Net Core SDK 6.x'
+  inputs:
+    version: 6.x
+    installationPath: $(Agent.ToolsDirectory)/dotnet
+
+- task: UseDotNet@2
+  displayName: 'Use .Net Core SDK 8.x'
+  inputs:
+    version: 8.x
+    installationPath: $(Agent.ToolsDirectory)/dotnet
+
 - task: UseDotNet@2
   displayName: 'Use .Net Core SDK 9.x'
   inputs: