Bump rust-vmm-ci from 7693628 to 877d1fb

Bumps [rust-vmm-ci](https://github.com/rust-vmm/rust-vmm-ci) from `7693628` to `877d1fb`.
- [Release notes](https://github.com/rust-vmm/rust-vmm-ci/releases)
- [Commits](rust-vmm/rust-vmm-ci@7693628...877d1fb)

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

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Author: dependabot[bot]