CI: cancel previous running actions if new commits are pushed #6193

Job	Run time
Lints	3m 0s
Integration tests	4m 20s
Colima (v0.6.5)	4m 7s
Integration tests (on Linux) (alpine.yaml)	4m 5s
Spell check	7s
Unit tests (1.22.x)	53s
Upgrade test (v0.15.1)	4m 22s
Integration tests (on Linux) (debian.yaml)	4m 18s
Unit tests (1.23.x)	4m 5s
VMNet test	4m 12s
Integration tests (on Linux) (fedora.yaml)	4m 4s
Integration tests (on Linux) (archlinux.yaml)	4m 15s
vz (default.yaml)	4m 20s
Windows tests	2m 48s
vz (fedora.yaml)	4m 20s
Integration tests (on Linux) (opensuse.yaml)	4m 14s
Integration tests (on Linux) (docker.yaml)	4m 4s
Integration tests (on Linux) (../hack/test-templates/alpine-iso-9p-writable.yaml)	4m 9s
Integration tests (on Linux) (../hack/test-templates/net-user-v2.yaml)	4m 7s
Integration tests (on Linux) (../hack/test-templates/test-misc.yaml)	4m 14s
	1h 14m 4s

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