👷 Fix smokeshow, checkout files on CI (#106)

Author: tiangolo

.github/workflows/smokeshow.yml

@@ -20,6 +20,7 @@ jobs:
         env:
           GITHUB_CONTEXT: ${{ toJson(github) }}
         run: echo "$GITHUB_CONTEXT"
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
           python-version: '3.9'