ci: add rust-cache action #1400

Job	Run time
Difftest (macOS-latest)	10m 29s
Difftest (ubuntu-latest)	8m 22s
Test (macOS-latest)	11m 54s
Compiletest (windows-latest)	14m 17s
Lint	1m 42s
cargo-deny	1m 0s
Android (ubuntu-latest, aarch64-linux-android)	2m 32s
Test (ubuntu-latest)	4m 59s
Compiletest (ubuntu-latest)	6m 12s
Test (windows-latest)	9m 26s
Difftest (windows-latest)	15m 15s
Compiletest (macOS-latest)	7m 43s
test_success	2s
cargo-deny	1m 4s
Difftest (macOS-latest)	21m 42s
Difftest (ubuntu-latest)	14m 10s
Android (ubuntu-latest, aarch64-linux-android)	8m 35s
Test (windows-latest)	20m 42s
Compiletest (windows-latest)	19m 38s
Difftest (windows-latest)	25m 55s
Test (macOS-latest)	20m 12s
Lint	6m 6s
Test (ubuntu-latest)	11m 13s
Compiletest (ubuntu-latest)	8m 7s
Compiletest (macOS-latest)	11m 23s
test_success	3s
	4h 22m 43s

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