GH Release task fix due to blocking changes (#782)

* Update a couple tags to fix a breaking change

* Disable Nuget push so can test  GH Release without pushing to nuget

* Test passed so re enabling Nuget Push so can do full release for v36

.azure/pipelines/azure-pipelines-external-release.yml

@@ -172,8 +172,8 @@ jobs:
       tagSource: userSpecifiedTag
       tag: 'v$(Build.BuildNumber)'
       title: 'Garnet v$(Build.BuildNumber)'
-      releaseNotesSource: input
-      releaseNotes: |
+      releaseNotesSource: inline
+      releaseNotesInline: |
        Get NuGet binaries at:
        * https://www.nuget.org/packages/Microsoft.Garnet