Bump rust-vmm-ci from 3e1f6fc to 4cb208e

Bumps [rust-vmm-ci](https://github.com/rust-vmm/rust-vmm-ci) from `3e1f6fc` to `4cb208e`.
- [Release notes](https://github.com/rust-vmm/rust-vmm-ci/releases)
- [Commits](rust-vmm/rust-vmm-ci@3e1f6fc...4cb208e)

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

Signed-off-by: dependabot[bot] <[email protected]>