Release/zcash primitives 0.21 #6286

Job	Run time
Test no-Orchard on macOS	7m 26s
Latest build on ubuntu-latest	2m 1s
Test Orchard on macOS	10m 35s
Latest build on windows-latest	5m 49s
Check ZFuture build on Linux	29s
Slow Test Orchard on Linux	4m 27s
Latest build on macOS-latest	1m 47s
Test no-Orchard on Windows	8m 33s
Check ZFuture build on macOS	35s
Slow Test NU7 on Linux	4m 22s
Check ZFuture build on Windows	3m 31s
Test Orchard on Windows	14m 26s
Bitrot check	1m 33s
Test NU7 on Windows	13m 50s
Build target wasm32-wasi	52s
Clippy (MSRV)	1m 21s
Code coverage	1h 34m 2s
Intra-doc links	2m 15s
Clippy (beta)	11s
Rustfmt	13s
protobuf consistency	1m 6s
Test no-Orchard on Linux	4m 48s
Test Orchard on Linux	6m 40s
Test NU7 on Linux	6m 53s
UUID validity	4s
Required status checks have passed	1s
	3h 17m 50s

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