fix(test-upload): mkdir

.github/workflows/test-upload.yml

@@ -26,6 +26,7 @@ jobs:
         run: echo "::set-output name=date::$(date +'%Y-%m-%dT%H:%M:%S')"
       - name: Create test file
         run: |
+          mkdir tests/log
           echo Upload test - ${{ steps.date.outputs.date }} > "tests/log/upload-${{ steps.date.outputs.date }}"
       - name: Upload to R2
         uses: ./