ci: fix setting YT_AUTHENTICATED variable

.forgejo/workflows/ci.yaml

@@ -30,11 +30,12 @@ jobs:
       - name: 🧪 Test
         run: |
           printf "$RUSTYPIPE_CACHE" > rustypipe_cache.json
+          echo "authenticated=$YT_AUTHENTICATED"
           cargo nextest run --config-file ~/.config/nextest.toml --profile ci --retries 2 --features rss --workspace
         env:
           ALL_PROXY: "http://warpproxy:8124"
           RUSTYPIPE_CACHE: "${{ secrets.RUSTYPIPE_CACHE }}"
-          YT_AUTHENTICATED: "${{ github.event_name != 'pull_request' }}" # no access to secrets for PRs
+          YT_AUTHENTICATED: "${{ secrets.RUSTYPIPE_CACHE != '' }}"
 
       - name: Move test report
         if: always()