chore(deps): Bump afl from 0.15.22 to 0.15.23 in /fuzz/afl.rs

Bumps [afl](https://github.com/rust-fuzz/afl.rs) from 0.15.22 to 0.15.23.
- [Changelog](https://github.com/rust-fuzz/afl.rs/blob/master/CHANGES.md)
- [Commits](https://github.com/rust-fuzz/afl.rs/commits/v0.15.23)

---
updated-dependencies:
- dependency-name: afl
  dependency-version: 0.15.23
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]