feat: add cancel method to the Execution object #683

Job	Run time
Collect changes / collect-changes	10s
Python tests / lint-and-format-check	40s
Python tests / types-check	1m 13s
Python tests / unit-tests (py310)	2m 35s
Python tests / unit-tests (py39)	2m 50s
Python tests / unit-tests (py312)	6m 45s
Python tests / unit-tests (py313)	3m 15s
Python tests / unit-tests (py311)	2m 33s
status-check	3s
	20m 4s

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