Cran skeleton update

[danielnachun]

Description

The R 4.4 + UCRT migration is now complete for all but one CRAN package (see conda-forge/r-volumodel-feedstock#2), and that failure is not related to the migration. We have a handful of other R packages from GitHub that are not yet migrated, also due to issues unrelated to the migration. I believe we are now in a state where we should update conda skeleton cran so that it generates valid recipes now that this migration is now effectively complete. The specific changes as can been in my commit are as follows:

• remove the {% set native = 'm2w64-' if win else '' %} Jinja line as we no longer use any m2w64 packages except m2w64-sysroot, and that is handled by conda-smithy, not in the recipe
• no longer add m2w64-gcc-libs to the dependency list for Windows, as we no longer use this package (see previous point)
• remove merge_build_host: True on Windows, as this is now irrelevant after the UCRT migration and will actually break the build in many cases
• Use pkg-config and make on Windows instead of m2-pkg-config and m2-make

I also removed the license_family entry as we no longer use this given that we have SPDX license identifiers now.

I'm not sure if these changes constitute a "significant" change worthy of a news update but I'm happy to add one if needed.

Checklist - did you ...

• Add a file to the news directory (using the template) for the next release's release notes?
• Add / update necessary tests?
• Add / update outdated documentation?

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[dbast]

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[codspeed-hq]

CodSpeed Performance Report

Merging #5617 will not alter performance

_{Comparing danielnachun:cran_skeleton_update (78e4f47) with main (e5b060e)}

Summary

✅ 5 untouched benchmarks