Update azure-pipelines-1.yml for Azure Pipelines

Author: Keboo

azure-pipelines-1.yml

@@ -29,13 +29,16 @@ steps:
 
 - task: PowerShell@2
   displayName: "Commit Updated Icons"
+  env:
+    UserName: $(GitHubUser)
+    Password: $(GitHubPat)
   inputs:
     targetType: 'inline'
     script:  git config --global user.email "[email protected]/"
 
       git config --global user.name "Azure Pipeline"
 
-      git remote set-url origin https://$(GitHubUser):$(GitHubPat)@github.com/MaterialDesignInXAML/MaterialDesignInXamlToolkit.git
+      git remote set-url origin https://$(env:UserName):$(env:Password)@github.com/MaterialDesignInXAML/MaterialDesignInXamlToolkit.git
 
       git commit -a -m "Icons update from Azure pipeline"