Bump libafl (#44)

Bumps the cargo group with 1 update in the /fuzzers/opentitan-fuzzer-verilator-sw-cov directory: [libafl](https://github.com/AFLplusplus/LibAFL).


Updates `libafl` from 0.8.2 to 0.11.2
- [Release notes](https://github.com/AFLplusplus/LibAFL/releases)
- [Commits](AFLplusplus/LibAFL@0.8.2...0.11.2)

---
updated-dependencies:
- dependency-name: libafl
  dependency-type: direct:production
  dependency-group: cargo
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>