Update to upstream (zcash/main v0.8.0) #1244

Job	Run time
Build target wasm32-wasi	2m 16s
Latest build on ubuntu-latest	1m 12s
Latest build on windows-latest	2m 50s
Bitrot check	2m 39s
Latest build on macOS-latest	58s
Book tests	16s
Code coverage	15m 6s
Intra-doc links	2m 58s
Rustfmt	15s
Test on ubuntu-latest	25m 10s
Test on windows-latest	26m 6s
Test on macOS-latest	19m 36s
	1h 39m 22s

Provide feedback