Update motorMotorSim version to R1-3

[TAU-Reinier]

The motorMotorSim module of epics-motor version R1-3 fixes a bug where motor axes could randomly be stuck at initialization.

The version of epics-motor/motorMotorSim is defined here

I'm not sure what testing is required before creating a PR, but the changes from R1-2 to R1-3 seem fairly minor otherwise.

[gilesknap]

Hi Reiner, if you create a PR I'll approve the CI and it does extensive testing, at least showing that all the yaml parses correctly and that various IOCs including a motorSim one can load with the new version of ibek-support.

If you want to see the CI running yourself you can make a fork and push any changes to that.