chore: Update CI for cargo fmt to use more recent nightly

[scouten-adobe]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 75.39%. Comparing base (36eeab8) to head (439cd02).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1650   +/-   ##
=======================================
  Coverage   75.39%   75.39%           
=======================================
  Files         167      167           
  Lines       37759    37759           
=======================================
  Hits        28467    28467           
  Misses       9292     9292           

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[codspeed-hq]

CodSpeed Performance Report

Merging #1650 will not alter performance

_{Comparing scouten/update-cargo-fmt-nightly (439cd02) with main (36eeab8)}

Summary

✅ 16 untouched
⏩ 2 skipped¹

Footnotes

1. 2 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩