Fix GitHub Actions 'publish' job

Author: Lucas-C

.github/workflows/continuous-integration-workflow.yml

@@ -202,6 +202,7 @@ jobs:
             *.githubusercontent.com:443
             pypi.org:443
             files.pythonhosted.org:443
+            tuf-repo-cdn.sigstore.dev:443
             upload.pypi.org:443
       - name: Checkout 🛎️
         uses: actions/checkout@v4