Update capstone requirement from 0.11.0 to 0.12.0 (#2170)

Updates the requirements on [capstone](https://github.com/capstone-rust/capstone-rs) to permit the latest version.
- [Release notes](https://github.com/capstone-rust/capstone-rs/releases)
- [Changelog](https://github.com/capstone-rust/capstone-rs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/capstone-rust/capstone-rs/compare/capstone-v0.11.0...capstone-v0.12.0)

---
updated-dependencies:
- dependency-name: capstone
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Dominik Maier <domenukk@gmail.com>

libafl_qemu/Cargo.toml

@@ -80,7 +80,7 @@ strum_macros = "0.25"
 syscall-numbers = "3.0"
 meminterval = "0.4"
 thread_local = "1.1.4"
-capstone = "0.11.0"
+capstone = "0.12.0"
 rangemap = "1.3"
 log = "0.4.20"
 addr2line = "0.21"