graphics/openshadinglanguage: Update 1.13.10.0 → 1.13.12.0
This update includes support for llvm 19.
Changelogs:
https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/releases/tag/v1.13.11.0
https://github.com/AcademySoftwareFoundation/OpenShadingLanguage/releases/tag/v1.13.12.0
PR: 284407