Release 12.1.8

windows: c29b0bcaee1ba6b8127ba2a3812e6b259c61a15e53697e61c82264d09c97c074 ./windows-v12.1.8/workloader.exe
mac: 532b043ac45cdbec1218f4781a79b007bf9be0be3c6aa2bd1f316cce6bf7b383 ./mac-v12.1.8/workloader
linux amd64: 487163497e281fe1e4edc97ff5ee4600f096f9a6f8914296475ee05c3bc92553 ./linux_amd64-v12.1.8/workloader
linux arm: 18e0dcbda305dbc5ea16056591f4230eec778eae7d85fdc40f2bfc875beb5291 ./linux_arm-v12.1.8/workloader