community/highway: upgrade to 0.15.0_git20220124
fix aarch64 tests, riscv64 build. use Release to work around highway bug https://github.com/google/highway/issues/398#issuecomment-1020806855 plus highway is full of vector code anyways
fix aarch64 tests, riscv64 build. use Release to work around highway bug https://github.com/google/highway/issues/398#issuecomment-1020806855 plus highway is full of vector code anyways