Bump Rust toolchain to 2022-08-22

[kostko]

No description provided.

[codecov]

Codecov Report

Merging #4896 (cf37956) into master (bc9532b) will decrease coverage by 0.61%.
The diff coverage is 61.58%.

@@            Coverage Diff             @@
##           master    #4896      +/-   ##
==========================================
- Coverage   67.29%   66.67%   -0.62%     
==========================================
  Files         456      460       +4     
  Lines       50539    50791     +252     
==========================================
- Hits        34008    33866     -142     
- Misses      12399    12754     +355     
- Partials     4132     4171      +39     

Impacted Files	Coverage Δ
go/ias/init.go	100.00% <ø> (ø)
go/runtime/host/protocol/types.go	54.54% <ø> (ø)
go/runtime/host/sgx/ecdsa.go	7.69% <3.92%> (-4.31%)	⬇️
go/common/sgx/ias/avr.go	41.11% <36.84%> (-1.23%)	⬇️
go/common/sgx/pcs/tcb.go	50.41% <41.50%> (-4.18%)	⬇️
go/common/node/node.go	68.26% <43.75%> (-0.20%)	⬇️
go/keymanager/api/api.go	80.64% <50.00%> (ø)
go/registry/api/api.go	57.33% <50.00%> (-0.39%)	⬇️
go/common/sgx/quote/quote.go	55.55% <55.55%> (ø)
...o/consensus/tendermint/apps/scheduler/scheduler.go	71.42% <57.14%> (-0.19%)	⬇️
... and 90 more

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