The source project of this merge request has been removed.
Update tpl libvpx 2023-01-26 (5a15b050) for windows linker fix
Code extracted from:
https://gitlab.kitware.com/third-party/libvpx.git
at commit 5a15b05050898a67417ed4604fcd1c461c334375 (for/vtk-20230126-v1.12.0).