When 3.6 releases there will be new fields for some classes, and various new examples. This issue is to update the codebase once the official 3.6 release is made (currently rc1).

• Update Makefile Argo Workflows Version
• Multiple semaphores/mutexes (only a change to the synchronization field in the spec as we don't have a Hera wrapper for this)
• CronWorkflows when - extra field in CronWorkflow
• CronWorkflows schedule -> schedules - extra field in CronWorkflow, make schedule: Optional
• Pod GC change - Hera does not have AW 3.6 types (pod_gc on WorkflowTemplate is not rendered correctly) #1292