build(deps): update vmm-sys-util requirement in the vm-virtio group

Updates the requirements on [vmm-sys-util](https://github.com/rust-vmm/vmm-sys-util) to permit the latest version.

Updates `vmm-sys-util` to 0.12.1
- [Release notes](https://github.com/rust-vmm/vmm-sys-util/releases)
- [Changelog](https://github.com/rust-vmm/vmm-sys-util/blob/main/CHANGELOG.md)
- [Commits](rust-vmm/vmm-sys-util@v0.12.1...v0.12.1)

---
updated-dependencies:
- dependency-name: vmm-sys-util
  dependency-version: 0.12.1
  dependency-type: direct:production
  dependency-group: vm-virtio
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Cargo.toml

@@ -16,4 +16,4 @@ codegen-units = 1
 
 [workspace.dependencies]
 vm-memory = "0.16.0"
-vmm-sys-util = "0.12.1"
+vmm-sys-util = "0.13.0"