parse strategy includes downloading directly

[francescalb]

https://github.com/EMMC-ASBL/oteapi-plugin-template/blob/2b7e534400f47daf805cf6c83c817bed3ea5665b/%7B%7B%20cookiecutter.project_slug%20%7D%7D/%7B%7B%20cookiecutter.package_name%20%7D%7D/strategies/parse.py#L67C1-L67C1

The parse strategy should not repeat the downloading of the downloadUrl.