switching over to powershell

.az-pipelines/windows-build-sign.yml

@@ -17,9 +17,12 @@ steps:
     versionSpec: '10.x'
   displayName: 'Install Node.js'
 
-- script: | 
+- task: PoswerShell@v2 
-    packageVersion=(Get-Content -Raw -Path $(System.DefaultWorkingDirectory)\src\package.json | ConvertFrom-Json).version;
+  inputs:
-    echo "##vso[task.setvariable variable=PACKAGE_VERSION]${packageVersion}"
+    targetType: 'inline'
+      script: | 
+        $packageVersion = (Get-Content -Raw -Path $(System.DefaultWorkingDirectory)\src\package.json | ConvertFrom-Json).version;
+        echo "##vso[task.setvariable variable=PACKAGE_VERSION]${packageVersion}"
   displayName: 'Setting packageVersion'
 
 - script: |