update list of programs to nauty 2.8.8

[dcoudert]

Checklist

• Used a personal fork of the feedstock to propose changes
• Bumped the build number (if the version is unchanged)
• Reset the build number to 0 (if the version changed)
• 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.

This PR updates the list of programs of nauty to the list of version 2.8.8. For instance, genktreeg has been introduced in version 2.8.8 and we want to use it in sagemath/sage#36924

[conda-forge-webservices]

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) and found it was in an excellent condition.

[isuruf]

Thanks

[dcoudert]

I realize that it might not be a good idea to add all programs of nauty in the list of programs due to the following test:

if [[ "$target_platform" != win-* ]]; then
    programs="$programs countg pickg shortg"
fi

[github-actions]

Hi! This is the friendly conda-forge automerge bot!

I considered the following status checks when analyzing this PR:

• linter: passed
• travis: passed
• azure: passed

Thus the PR was passing and merged! Have a great day!

[isuruf]

There were compilation errors for those programs in windows, but we've disabled windows for now anyways.