CI: Downgrade to qemu-8.2.1 #5638

Job	Run time
Lints	1m 31s
Windows tests	5m 0s
Colima (v0.6.5)	6m 49s
Integration tests	8m 13s
Integration tests (on Linux) (alpine.yaml)	5m 43s
Integration tests (on Linux) (debian.yaml)	6m 40s
Unit tests (1.22.x)	35s
Integration tests (on Linux) (fedora.yaml)	7m 33s
Unit tests (1.23.x)	3m 55s
Upgrade test (v0.15.1)	14m 38s
Integration tests (on Linux) (archlinux.yaml)	8m 3s
Integration tests (on Linux) (opensuse.yaml)	7m 48s
Integration tests (on Linux) (experimental/net-user-v2.yaml)	6m 43s
VMNet test	9m 21s
vz (default.yaml)	11m 22s
Integration tests (on Linux) (experimental/9p.yaml)	6m 20s
vz (fedora.yaml)	9m 54s
Integration tests (on Linux) (docker.yaml)	13m 20s
Integration tests (on Linux) (../hack/test-templates/alpine-9p-writable.yaml)	5m 31s
Integration tests (on Linux) (../hack/test-templates/test-misc.yaml)	19m 11s
	2h 38m 10s

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