Bump libfuzzer-sys from 0.4.8 to 0.4.9 (#194)

Bumps [libfuzzer-sys](https://github.com/rust-fuzz/libfuzzer) from 0.4.8 to 0.4.9.
- [Changelog](https://github.com/rust-fuzz/libfuzzer/blob/main/CHANGELOG.md)
- [Commits](rust-fuzz/libfuzzer@0.4.8...0.4.9)

---
updated-dependencies:
- dependency-name: libfuzzer-sys
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]