CI: add back archlinux #6130

Job	Run time
Lints	2m 5s
Spell check	8s
Unit tests (1.22.x)	51s
Windows tests	5m 8s
Unit tests (1.23.x)	4m 10s
Colima (v0.6.5)	9m 19s
Integration tests	12m 51s
Upgrade test (v0.15.1)	12m 46s
Integration tests (on Linux) (alpine.yaml)	6m 22s
VMNet test	10m 25s
vz (default.yaml)	9m 11s
Integration tests (on Linux) (debian.yaml)	6m 40s
vz (fedora.yaml)	8m 54s
Integration tests (on Linux) (fedora.yaml)	6m 42s
Integration tests (on Linux) (archlinux.yaml)	44m 40s
Integration tests (on Linux) (opensuse.yaml)	9m 58s
Integration tests (on Linux) (docker.yaml)	18m 26s
Integration tests (on Linux) (../hack/test-templates/alpine-iso-9p-writable.yaml)	6m 0s
Integration tests (on Linux) (../hack/test-templates/net-user-v2.yaml)	7m 30s
Integration tests (on Linux) (../hack/test-templates/test-misc.yaml)	19m 46s
	3h 21m 52s

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