Bump actions/download-artifact from 5 to 6 (#269)

Author: dependabot[bot]

.github/workflows/publish.yml

@@ -32,7 +32,7 @@ jobs:
           - { url: 'https://nuget.pkg.github.com/Accenture/index.json', apiKeySecretName: 'GITHUB_TOKEN' }
     steps:
     - name: 🔽 download packages
-      uses: actions/download-artifact@v5
+      uses: actions/download-artifact@v6
       with:
         pattern: packages-*
         merge-multiple: true