build(deps): bump rust-vmm-ci from 7606478 to 0503867

Bumps [rust-vmm-ci](https://github.com/rust-vmm/rust-vmm-ci) from `7606478` to `0503867`.
- [Commits](rust-vmm/rust-vmm-ci@7606478...0503867)

---
updated-dependencies:
- dependency-name: rust-vmm-ci
  dependency-type: direct:production
...

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

Author: dependabot[bot]