Maybe this will fix the pipeline...

azure-pipelines.yml

@@ -12,6 +12,8 @@ variables:
 
 steps:
 - task: NuGetToolInstaller@1
+  inputs:
+    versionSpec: '5.x'
 
 - task: NuGetCommand@2
   inputs:
@@ -47,4 +49,4 @@ steps:
 - task: CmdLine@2
   inputs:
     script: codecov -f .\PixiEditorTests\PixiEditor_coverage.xml -t $(CODECOV_TOKEN)
-  displayName: Upload to Codecov.io
+  displayName: Upload to Codecov.io