CI: Downgrade to qemu-8.2.1 #5639

Job	Run time
Colima (v0.6.5)	7m 17s
Integration tests	9m 3s
Integration tests (on Linux) (alpine.yaml)	6m 0s
Lints	1m 44s
Integration tests (on Linux) (debian.yaml)	6m 19s
Integration tests (on Linux) (fedora.yaml)	6m 34s
Unit tests (1.22.x)	35s
Integration tests (on Linux) (archlinux.yaml)	7m 57s
Unit tests (1.23.x)	4m 8s
Integration tests (on Linux) (opensuse.yaml)	7m 14s
Integration tests (on Linux) (experimental/net-user-v2.yaml)	6m 40s
Windows tests	4m 40s
Integration tests (on Linux) (experimental/9p.yaml)	6m 27s
Integration tests (on Linux) (docker.yaml)	7m 36s
Upgrade test (v0.15.1)	20m 11s
Integration tests (on Linux) (../hack/test-templates/alpine-9p-writable.yaml)	5m 11s
Integration tests (on Linux) (../hack/test-templates/test-misc.yaml)	19m 32s
VMNet test	10m 21s
vz (default.yaml)	16m 33s
vz (fedora.yaml)	16m 25s
	2h 50m 27s

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