Move aarch64 from QEMU to native aarch64 machines #2858

Job	Run time
Lint bash, docker, markdown, and yaml	1m 42s
Validate musl Docker image builds	21s
Validate GNU Docker image builds	28s
Validate Windows Docker image builds	11m 0s
armhf Linux glibc	28m 33s
arm Linux glibc	28m 8s
riscv64 Linux glibc	23m 20s
Validate GNU Docker release image builds	32s
Validate musl Docker release image builds	19s
Validate Windows Docker release image builds	11m 20s
Verify CHANGELOG is valid	7s
x86-64 Linux glibc	20m 46s
aarch64 Linux glibc	18m 32s
x86-64 Linux musl	23m 23s
arm64 Apple Darwin	13m 12s
x86-64 Apple Darwin	22m 25s
x86-64 Windows MSVC	38m 40s
use dtrace	20m 37s
use pool_memalign	23m 32s
use runtimestats	21m 50s
	5h 8m 47s

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