Install all .NET versions in pipeline to fix run tests task (#3152)

Author: msbw2

build/template-install-dependencies.yaml

@@ -3,6 +3,26 @@
 #install dotnet core
 
 steps:
+- task: UseDotNet@2
+  displayName: 'Use .NET SDK 3.1'
+  inputs:
+    version: 3.1.x
+
+- task: UseDotNet@2
+  displayName: 'Use .NET SDK 6.0.x'
+  inputs:
+    version: 6.0.x
+
+- task: UseDotNet@2
+  displayName: 'Use .NET SDK 7.0.x'
+  inputs:
+    version: 7.0.x
+
+- task: UseDotNet@2
+  displayName: 'Use .NET SDK 8.0.x'
+  inputs:
+    version: 8.0.x
+
 - task: UseDotNet@2
   displayName: 'Use .NET SDK 9.0.x'
   inputs: