feat: add musllinux armv7l #4428

Job	Run time
Linters (mypy, flake8, etc.)	49s
Get qemu emulated architectures	9s
Test cibuildwheel building pyodide wheels	5m 17s
Test on ubuntu-latest (3.12)	41m 1s
Test on windows-latest (3.12)	43m 20s
Test on macos-13 (3.12)	19m 55s
Test on macos-14 (3.12)	14m 21s
Test on ubuntu-latest (3.8)	42m 24s
Test Linux aarch64 using qemu	27m 24s
Test Linux armv7l using qemu	9m 40s
Test Linux ppc64le using qemu	17m 43s
Test Linux s390x using qemu	18m 56s
	4h 0m 59s

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