Update to use executions endpoint instead of liveactions

[shusugmt]

liveactions is deprecated and is planned to be deleted from 3.2.0. Need to migrate to use executions.

Affected actions:

• executions.get
• executions.list
• executions.re_run

[emptywee]

@nmaludy is this confirmed? I am on 3.2.0 and these methods are still present for liveactions.

[nmaludy]

@m4dcoder might know more here