Release/zcash primitives 0.21 #6282

Job	Run time
Test no-Orchard on Linux	4m 29s
Test Orchard on Linux	4m 44s
Test NU7 on Linux	4m 45s
Slow Test Orchard on Linux	4m 43s
Slow Test NU7 on Linux	4m 48s
Latest build on ubuntu-latest	2m 15s
Build target wasm32-wasi	54s
Latest build on windows-latest	4m 15s
Check ZFuture build on Linux	1m 58s
Latest build on macOS-latest	1m 57s
Check ZFuture build on macOS	1m 29s
Check ZFuture build on Windows	5m 4s
Test no-Orchard on macOS	6m 40s
Bitrot check	1m 32s
Test Orchard on macOS	8m 28s
Clippy (MSRV)	1m 24s
Test no-Orchard on Windows	9m 55s
Clippy (beta)	13s
Test Orchard on Windows	13m 50s
Code coverage	1h 38m 12s
Rustfmt	16s
Test NU7 on Windows	14m 23s
Intra-doc links	2m 18s
protobuf consistency	1m 4s
UUID validity	4s
Required status checks have passed	1s
	3h 19m 41s

Provide feedback