fix: try workaround for dotnet-cli bug

ref: https://github.com/dotnet/cli/issues/9114

Author: giulioungaretti

azure-pipelines.yml

@@ -23,8 +23,7 @@ steps:
   workingDirectory: ./src
 
 - script: |
-    export DOTNET_ROOT=$HOME/.dotnet/
-    export PATH=$PATH:$HOME/.dotnet/tools
+    export PATH=$PATH:$HOME/.dotnet/tools:/Library/Frameworks/Mono.framework/Versions/Current/Commands
     dotnet tool install fake-cli -g
     fake build -t BuildElectron
   workingDirectory: ./src