Update dtolnay/rust-toolchain digest

[nextest-bot]

This PR contains the following updates:

Package	Type	Update	Change
dtolnay/rust-toolchain (changelog)	action	digest	4be7066 → 4cda84d
dtolnay/rust-toolchain (changelog)	action	digest	efcb852 → 4fd1da8
dtolnay/rust-toolchain (changelog)	action	digest	fa04a14 → 2c7215f

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.27%. Comparing base (cfedf0c) to head (91b55c5).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #602   +/-   ##
=======================================
  Coverage   84.27%   84.27%           
=======================================
  Files           7        7           
  Lines        1762     1762           
=======================================
  Hits         1485     1485           
  Misses        277      277           

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