Use different variable for github token

eng/pipelines/build.yml

@@ -43,7 +43,7 @@ jobs:
           DOTNET_CLI_TELEMETRY_OPTOUT: 1
           DOTNET_MULTILEVEL_LOOKUP: 0
       - ${{if and(ne(variables['Build.Reason'], 'PullRequest'), eq(variables['System.TeamProject'], 'internal'))}}:
-        - pwsh: ./eng/PublishRelease.ps1 -WorkingDirectory ./artifacts/bin/AutoRest.CSharp.V3/Debug/netcoreapp3.0/ -PackageJson ./src/AutoRest.CSharp.V3/package.json -Token $(Github-azuresdkci-personalaccesstoken) -Artifacts $(Build.ArtifactStagingDirectory) -BuildNumber $(Build.BuildNumber) -Sha $(Build.SourceVersion)
+        - pwsh: ./eng/PublishRelease.ps1 -WorkingDirectory ./artifacts/bin/AutoRest.CSharp.V3/Debug/netcoreapp3.0/ -PackageJson ./src/AutoRest.CSharp.V3/package.json -Token $(azuresdk-github-pat) -Artifacts $(Build.ArtifactStagingDirectory) -BuildNumber $(Build.BuildNumber) -Sha $(Build.SourceVersion)
           condition: succeeded()
           failOnStderr: false
           displayName: 'Publish to GitHub'