Temporarily comment-out NuGet publishing

This is done to test #254.  I want to push an experimental
tag to Github and I don't want it _actually published_. What I
want is the build & pack to occur, and for that to be uploaded
as an artifact.  I can then inspect that, verify it's correct and
then - if that's OK - reinstate the publishing logic.

Author: craigfowler

.github/workflows/releaseBuild.yml

@@ -47,14 +47,14 @@ jobs:
         with:
           name: Build results (NuGet)
           path: packages/*.nupkg
-      - name: Publish packages to GitHub feed
-        if: ${{ github.event_name != 'pull_request' && github.ref_name == 'master' }}
-        run: |
-          dotnet nuget add source --username ${{ env.GithubNugetUsername }} --password ${{ secrets.GITHUB_TOKEN }} --store-password-in-clear-text --name github "https://nuget.pkg.github.com/csf-dev/index.json"
-          for package in packages/*.nupkg
-          do
-            dotnet nuget push $package --source github
-          done
+      # - name: Publish packages to GitHub feed
+      #   if: ${{ github.event_name != 'pull_request' && github.ref_name == 'master' }}
+      #   run: |
+      #     dotnet nuget add source --username ${{ env.GithubNugetUsername }} --password ${{ secrets.GITHUB_TOKEN }} --store-password-in-clear-text --name github "https://nuget.pkg.github.com/csf-dev/index.json"
+      #     for package in packages/*.nupkg
+      #     do
+      #       dotnet nuget push $package --source github
+      #     done
 
   build_docs_site:
     name: Build the documentation website