feat: Use async bonsai client

[rakanalh]

Description

Linked Issues

• Fixes Use async bonsai client #2987

[codecov]

Codecov Report

❌ Patch coverage is 0% with 13 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.5%. Comparing base (deae381) to head (6b30add).
⚠️ Report is 3 commits behind head on nightly.

Files with missing lines	Patch %	Lines
crates/risc0/src/host/bonsai.rs	0.0%	10 Missing ⚠️
crates/risc0/src/host/mod.rs	0.0%	3 Missing ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
crates/risc0/src/host/mod.rs	57.7% <0.0%> (-4.8%)	⬇️
crates/risc0/src/host/bonsai.rs	0.0% <0.0%> (ø)

... and 235 files with indirect coverage changes

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