Fix artifact name

Author: dsplaisted

eng/pipelines/templates/jobs/dnup/dnup-library-publish.yml

@@ -35,7 +35,7 @@ jobs:
           - task: 1ES.DownloadPipelineArtifact@1
             displayName: 🟣 Download build artifacts
             inputs:
-              artifactName: Artifacts
+              artifactName: dnup-library-packages
               targetPath: $(System.DefaultWorkingDirectory)/artifacts
           # 1ES docs: https://eng.ms/docs/cloud-ai-platform/devdiv/one-engineering-system-1es/1es-docs/1es-pipeline-templates/features/outputs/nuget-packages
           # DotNetCoreCLI@2 docs: https://learn.microsoft.com/en-us/azure/devops/pipelines/tasks/reference/dotnet-core-cli-v2