Update Platforms and Executors for ATT&CKv9
Update Platforms and Executors for ATT&CKv9

Implement changes proposed in https://github.com/redcanaryco/atomic-red-team/issues/1491
redcanaryco/atomic-red-team,redcanaryco/atomic-red-team,redcanaryco/atomic-red-team,redcanaryco/atomic-red-team,redcanaryco/atomic-red-team,redcanaryco/atomic-red-team,redcanaryco/atomic-red-team,redcanaryco/atomic-red-team,redcanaryco/atomic-red-team,redcanaryco/atomic-red-team,redcanaryco/atomic-red-team,redcanaryco/atomic-red-team