ci: sync cargo-check-external-types nightly

[cpu]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.04%. Comparing base (f64a014) to head (a3a8b12).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #425   +/-   ##
=======================================
  Coverage   97.04%   97.04%           
=======================================
  Files          20       20           
  Lines        4230     4230           
=======================================
  Hits         4105     4105           
  Misses        125      125           

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