ci: resolve target tuple from rustc #495

Job	Run time
Android (ubuntu-24.04, aarch64-linux-android)	1m 57s
Test (ubuntu-24.04)	47s
Test (macOS-latest)	55s
Compiletest (windows-2022)	46s
Compiletest (ubuntu-24.04)	46s
Compiletest (macOS-latest)	54s
Test (windows-2022)	48s
Difftest (ubuntu-24.04)	1m 19s
Lint	1m 58s
Difftest (windows-2022)	1m 0s
cargo-deny	1m 3s
Difftest (macOS-latest)	1m 3s
test_success	1s
	13m 17s

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