[3.10] Use older libffi as new is not working with 3.10 on windows

[schribl]

Checklist

• Used a personal fork of the feedstock to propose changes
• Bumped the build number (if the version is unchanged)
• Re-rendered with the latest conda-smithy (Use the phrase @conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
• Ensured the license file is being packaged.

While working on #776 I discovered that the windows build for 3.10 (and 3.9) does not work on windows anymore.

I did not really find the root cause, but I checked old build logs from CI and the only major diff I could find was the libffi version. So I tried downgrading the libffi version and this apparently fixes the build.

Open question is:
Should the Linux build also downgrade or should be different versions of libffi be used per OS?

Also the other question would be what is the proper fix. I could not yet identify the exact PR in the Python repo that would fix this.

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe/meta.yaml) and found it was in an excellent condition.

I do have some suggestions for making it better though...

For recipe/meta.yaml:

• ℹ️ The recipe is not parsable by parser conda-souschef (grayskull). This parser is not currently used by conda-forge, but may be in the future. We are collecting information to see which recipes are compatible with grayskull.
• ℹ️ The recipe is not parsable by parser conda-recipe-manager. The recipe can only be automatically migrated to the new v1 format if it is parseable by conda-recipe-manager.

_{This message was generated by GitHub Actions workflow run https://github.com/conda-forge/conda-forge-webservices/actions/runs/14174385939. Examine the logs at this URL for more detail.}

[schribl]

@conda-forge-admin, please rerender

[isuruf]

Thanks

[schribl]

Thanks a lot @isuruf, should I backport the changes (force older libffi version) to 3.9 to fix the Windows build?

[isuruf]

Yes, let's backport to 3.9