Bump styfle/cancel-workflow-action from 0.11.0 to 0.12.0 #72

Job	Run time
Check whether tests need to be run based on diff	21s
Verify docs and spelling	45s
Golangci-lint (ubuntu-latest)	13m 27s
Unit test (windows-2019)	45m 17s
Golangci-lint (macos-latest)	10m 45s
Build Antrea and antctl binaries	25m 11s
Integration test	18m 55s
Unit test (ubuntu-latest)	25m 13s
Check tidy, code generation and manifest	8m 21s
Build Antrea Windows binaries	3m 14s
Go benchmark test	10m 4s
	2h 41m 33s

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