allow DEFAULT_LINUX_VERSION=alma10

[h-vetinari]

This doesn't change the default, but it allows feedstocks to choose the images that go together with the 2.39 sysroot where necessary by adding

os_version:
  linux_64: alma10
  linux_aarch64: alma10
  linux_ppc64le: alma10

to conda-forge.yml (instead of doing gymnastics with overriding docker_images correctly).

Xref:

• add alma10 images docker-images#319
• Add alma10 sysroot linux-sysroot-feedstock#92
• roll-out of glibc 2.39 / RHEL10-derived infrastructure conda-forge.github.io#2657

[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-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/20524507555. Examine the logs at this URL for more detail.}