Update nuget_build_release.yml

Avoid expanding secrets in a run block

Author: Zeugma440

.github/workflows/nuget_build_release.yml

@@ -38,4 +38,6 @@ jobs:
         run: dotnet pack "${{ env.PROJECT_PATH }}" -p:PackageVersion=${{ github.event.release.tag_name }} --no-restore --no-build --configuration Release --output "${{ env.PACKAGE_OUTPUT_DIRECTORY }}"
 
       - name: "Push package"
-        run: dotnet nuget push "${{ env.PACKAGE_OUTPUT_DIRECTORY }}/*.nupkg" --source ${{ env.NUGET_SOURCE_URL }} --api-key ${{ secrets.NUGET_API_KEY }} --skip-duplicate
+        env:
+          API_KEY: ${{ secrets.NUGET_API_KEY }}
+        run: dotnet nuget push "${{ env.PACKAGE_OUTPUT_DIRECTORY }}/*.nupkg" --source ${{ env.NUGET_SOURCE_URL }} --api-key $$API_KEY --skip-duplicate