fix(dep): fix toolchain updation

[liubog2008]

• new-version maybe empty if only sha256 changes

[ti-chi-bot]

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This pull-request has been approved by: fgksgf

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2026-01-07 01:56:19.51975403 +0000 UTC m=+753735.338062452: ☑️ agreed by fgksgf.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 39.33%. Comparing base (7b359cb) to head (7e22863).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6642   +/-   ##
=======================================
  Coverage   39.33%   39.33%           
=======================================
  Files         351      351           
  Lines       20665    20665           
=======================================
  Hits         8129     8129           
  Misses      12536    12536           

Flag	Coverage Δ
unittest	39.33% <ø> (ø)

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