test

Disable GA serial port in QEMU as it is not used by GA #6796

Job	Run time
Windows tests	3m 13s
Colima tests (QEMU, Linux host) (v0.6.5)	14m 6s
Integration tests (QEMU, macOS host)	10m 29s
Lints	2m 4s
Integration tests (QEMU, Linux host) (alpine.yaml)	6m 0s
Spell check	7s
Integration tests (QEMU, Linux host) (debian.yaml)	6m 29s
Unit tests (1.22.x)	1m 54s
Integration tests (QEMU, Linux host) (fedora.yaml)	6m 23s
Unit tests (1.23.x)	4m 14s
Integration tests (QEMU, Linux host) (archlinux.yaml)	8m 6s
Integration tests (QEMU, Linux host) (opensuse.yaml)	7m 44s
Integration tests (QEMU, Linux host) (docker.yaml)	7m 7s
Integration tests (QEMU, Linux host) (../hack/test-templates/alpine-iso-9p-writable.yaml)	5m 33s
Integration tests (QEMU, Linux host) (../hack/test-templates/net-user-v2.yaml)	7m 2s
Integration tests (QEMU, Linux host) (../hack/test-templates/test-misc.yaml)	19m 51s
Upgrade tests (QEMU, macOS host) (v0.15.1)	8m 51s
VMNet tests (QEMU)	7m 44s
Integration tests (vz) (default.yaml, true)	8m 22s
Integration tests (vz) (fedora.yaml, false)	9m 12s
	2h 24m 31s

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