Update azure-pipelines_nightly.yml for Azure Pipelines

.github/ISSUE_TEMPLATE/workflows/azure-pipelines_nightly.yml

@@ -122,9 +122,6 @@ steps:
     BinSkim: true
     CredScan: true
     PoliCheck: true
-    
-variables:
-  BuildConfiguration: 'release'
 
 - task: EsrpCodeSigning@1
   displayName: 'ESRP CodeSigning'
@@ -250,4 +247,4 @@ variables:
     packagesToPush: '$(Build.ArtifactStagingDirectory)\Nuget\*Nightly*.nupkg'
     nuGetFeedType: external
     publishFeedCredentials: 'MyGet.Org - OpenApi-OData-master Nightly Feed'
-  enabled:false
+  enabled: 'false'