Release 12.0.19

windows: 57d51b7693e08bebf062d3267a3ecfcef57a992a4b83ed9be64046e8383a261d ./windows-v12.0.19/workloader.exe
mac: 68dbd37b4e8aa72c8057ed273bab3c624d0629c7d8510456b2d9441326dd35f0 ./mac-v12.0.19/workloader
linux amd64: e477c89b2adff3b7061a94798d2d561711afb3f31dc9a49a881809bff5da80aa ./linux_amd64-v12.0.19/workloader
linux arm: cff5b347b76d829910fc2ae3826143e83e768895cc2e48f46ca258cac24bcb1f ./linux_arm-v12.0.19/workloader