deps: Update virtio-queue dependency to 0.2.0

[sboeuf]

Summary of the PR

Updating the virtio-queue crate dependency to rely on the latest version.

Requirements

Before submitting your PR, please make sure you addressed the following requirements:

• [x] All commits in this PR are signed (with git commit -s), and the commit message has max 60 characters for the summary and max 75 characters for each description line.
• [x] All added/changed functionality has a corresponding unit/integration test.
• [x] Any newly added unsafe code is properly documented.

[sboeuf]

/cc @slp @jiangliu

[sboeuf]

Superseded by dependabot's PR https://github.com/rust-vmm/vhost-user-backend/pull/64