CI: Enable more cross-compiled builds #434

Job	Run time
Get declared MSRV from Cargo.toml	12s
Check code formatting (1.74.0)	19s
Test on each target (android-aarch64, 1.74.0)	5m 0s
Check code formatting (stable)	20s
Check code formatting (nightly)	17s
Test on each target (android-aarch64, stable)	4m 45s
Test on each target (android-aarch64, nightly)	4m 48s
Test on each target (linux-aarch64-gnu, 1.74.0)	4m 40s
Test on each target (linux-aarch64-gnu, stable)	4m 35s
Test on each target (linux-aarch64-gnu, nightly)	4m 39s
Test on each target (linux-aarch64-musl, 1.74.0)	4m 46s
Test on each target (linux-aarch64-musl, stable)	4m 45s
Test on each target (linux-aarch64-musl, nightly)	4m 34s
Test on each target (linux-x64-gnu, 1.74.0)	2m 31s
Test on each target (linux-x64-gnu, stable)	2m 22s
Test on each target (linux-x64-gnu, nightly)	2m 22s
Test on each target (linux-x64-musl, 1.74.0)	2m 35s
Test on each target (linux-x64-musl, stable)	2m 30s
Test on each target (linux-x64-musl, nightly)	2m 28s
Test on each target (macos-aarch64, 1.74.0)	2m 53s
Test on each target (macos-aarch64, stable)	3m 34s
Test on each target (macos-aarch64, nightly)	1m 41s
Test on each target (macos-x64, 1.74.0)	4m 7s
Test on each target (macos-x64, stable)	3m 8s
Test on each target (macos-x64, nightly)	2m 40s
Test on each target (windows-x64-msvc, 1.74.0)	5m 21s
Test on each target (windows-x64-msvc, stable)	5m 4s
Test on each target (windows-x64-msvc, nightly)	5m 23s
	1h 32m 19s

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