Upgrade qemu and integrate qemu-user runners for loongarch64 #4179

Job	Run time
clippy (macos-latest)	42s
clippy (ubuntu-latest)	22s
cargo-deny	24s
check	26s
clippy (windows-latest)	51s
fmt	12s
generate-matrix	20s
shellcheck	8s
test (macos-latest)	2m 25s
test (ubuntu-latest)	1m 13s
test (windows-latest)	2m 16s
foreign	2m 34s
remote	2m 14s
bisect	3m 57s
docker-in-docker	3m 49s
podman	2m 16s
target (${{ matrix.pretty }},${{ matrix.os }})	0s
publish	0s
conclusion	1s
Coverage	19s
	24m 29s

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