build: bump rust toolchain to 2022-08-10

[bstrie]

Periodic regular bump in accordance with new stable Rust release.

Signed-off-by: bstrie [email protected]

[codecov[bot]]

Codecov Report

Merging #2130 (f4356f1) into main (69f1e3b) will increase coverage by 2.36%. The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #2130      +/-   ##
==========================================
+ Coverage   58.90%   61.27%   +2.36%     
==========================================
  Files         187      187              
  Lines       11566    11566              
==========================================
+ Hits         6813     7087     +274     
+ Misses       4753     4479     -274     

Impacted Files	Coverage Δ
...ates/sallyport/src/guest/call/gdbcall/write_all.rs	66.66% <0.00%> (-11.12%)	:arrow_down:
...sallyport/src/guest/call/enarxcall/get_snp_vcek.rs	54.54% <0.00%> (-9.10%)	:arrow_down:
...allyport/src/guest/call/enarxcall/get_sgx_quote.rs	73.68% <0.00%> (-5.27%)	:arrow_down:
src/cli/run.rs	100.00% <0.00%> (+2.50%)	:arrow_up:
src/exec/mod.rs	98.85% <0.00%> (+3.44%)	:arrow_up:
...es/exec-wasmtime/src/loader/configured/platform.rs	79.62% <0.00%> (+3.70%)	:arrow_up:
crates/exec-wasmtime/src/loader/mod.rs	87.80% <0.00%> (+7.31%)	:arrow_up:
crates/exec-wasmtime/src/loader/compiled/mod.rs	88.46% <0.00%> (+40.38%)	:arrow_up:
src/backend/nil.rs	94.20% <0.00%> (+40.57%)	:arrow_up:
crates/exec-wasmtime/src/lib.rs	93.54% <0.00%> (+48.38%)	:arrow_up:
... and 3 more

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[bstrie]

Before we can merge any toolchain bump we need to wait for a new release of cap-std that contains https://github.com/bytecodealliance/cap-std/pull/271 , and then we need to upgrade our dependencies to use it.