Build

Update libc:musl to support loongarch64 #1696

Job	Run time
Type-check benchmarks	27s
Type checking (MSRV, no_std)	1m 48s
Test (miri)	13m 11s
Type checking (MSRV, std_no_offset)	3m 27s
Test (Ubuntu, MSRV)	1m 42s
Type checking (MSRV, std_with_offset)	2m 15s
Test (Windows, MSRV)	3m 4s
Type checking (stable, no_std)	59s
Clippy	1m 18s
Test (MacOS, MSRV)	1m 27s
Test (Ubuntu, stable)	1m 17s
Cross-build	49s
Test (Windows, stable)	2m 42s
Type checking (stable, std_no_offset)	2m 20s
Test (MacOS, stable)	1m 0s
Type checking (stable, std_with_offset)	1m 26s
Documentation	18s
Formatting	11s
Coverage	58s
Publish docs	0s
	40m 39s

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