Update toolchain

[andrewmilson]

This change is 

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 94.11765% with 8 lines in your changes missing coverage. Please review.

Project coverage is 92.83%. Comparing base (cdf66f3) to head (6c25d63).
Report is 1 commits behind head on dev.

Files with missing lines	Patch %	Lines
crates/prover/src/core/backend/simd/utils.rs	63.15%	7 Missing ⚠️
crates/prover/src/core/pcs/verifier.rs	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #847      +/-   ##
==========================================
+ Coverage   91.86%   92.83%   +0.96%     
==========================================
  Files          89       88       -1     
  Lines       12080    11663     -417     
  Branches    12080    11663     -417     
==========================================
- Hits        11097    10827     -270     
+ Misses        876      762     -114     
+ Partials      107       74      -33     

Flag	Coverage Δ
	92.83% <94.11%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.