Support for WorkflowIdConflictPolicy (#1563) #56

Job	Run time
build-and-test (ubuntu-latest, oldstable)	17m 11s
cloud-test (oldstable)	1m 1s
build-and-test (ubuntu-latest, stable)	25m 32s
cloud-test (stable)	1s
build-and-test (macos-intel, oldstable)	18m 16s
build-and-test (macos-intel, stable)	17m 49s
build-and-test (macos-arm, oldstable)	17m 38s
build-and-test (macos-arm, stable)	17m 30s
build-and-test (windows-latest, oldstable)	21m 28s
build-and-test (windows-latest, stable)	21m 6s
features-test / test	2m 11s
	2h 39m 43s

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