chore(deps): update rust crate libfuzzer-sys to v0.4.12

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
libfuzzer-sys	dependencies	patch	0.4.10 → 0.4.12

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Release Notes

rust-fuzz/libfuzzer (libfuzzer-sys)

v0.4.12

Released 2026-02-10.

Changed

• Recommend SmallRng over StdRng in the examples for faster, more lightweight
  seeding and sampling
• Updated rand dependency from 0.8.5 to 0.10
• Updated flate2 dependency from 1.0.24 to 1.1
• Rename gen variable to rng for better 2024 Edition compatibility

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v0.4.11

Compare Source

Released 2026-02-10.

Changed

• Updated to libFuzzer commit a47b42eb9f9b (release/22.x).

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[github-actions]

GNU testsuite comparison:

GNU test failed: tests/pr/bounded-memory. tests/pr/bounded-memory is passing on 'main'. Maybe you have to rebase?
GNU test failed: tests/tail/retry. tests/tail/retry is passing on 'main'. Maybe you have to rebase?