Grayskull bot does not pull recipe correctly when source is Github

[thewchan]

When using bot:inspection:hint-all to generated dependency updates in feedstocks, the grayskull bot seems to always pull from PyPI even when the recipe uses a Github source because the sdist is not available on PyPI, causing the dependency hints to fail to generate with this message:

2024-11-18T22:11:21.0016455Z   File "/opt/conda/envs/cf-scripts/lib/python3.11/site-packages/grayskull/strategy/pypi.py", line 280, in get_pypi_metadata
2024-11-18T22:11:21.0017667Z     raise AttributeError(f"There is no sdist package on pypi for {config.name}.")
2024-11-18T22:11:21.0018283Z AttributeError: There is no sdist package on pypi for creosote.

As an example:
conda-forge/creosote-feedstock#6
https://github.com/regro/cf-scripts/actions/runs/11901774030/job/33165408730

The bot should recognize that the source is located in GH and run grayskull pypi gh_url instead