chore(deps): update rust crate libfuzzer-sys to v0.4.13

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
libfuzzer-sys	dependencies	patch	0.4.12 → 0.4.13

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Release Notes

rust-fuzz/libfuzzer (libfuzzer-sys)

v0.4.13

Compare Source

Released 2026-06-04.

Changed

• Updated docs for the fuzz_mutator! macro to link to the mutatis
  crate, which is a helpful crate when writing complex
  custom mutators.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.30%. Comparing base (672a2ac) to head (6a38897).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #300   +/-   ##
=======================================
  Coverage   99.30%   99.30%           
=======================================
  Files          20       20           
  Lines        3894     3894           
  Branches      122      122           
=======================================
  Hits         3867     3867           
  Misses         26       26           
  Partials        1        1           

Flag	Coverage Δ
macos_latest	99.30% <ø> (ø)
ubuntu_latest	99.30% <ø> (ø)
windows_latest	14.04% <ø> (ø)

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