chore(deps): bump smallvec from 1.7.0 to 1.8.0 (#11279)

Bumps [smallvec](https://github.com/servo/rust-smallvec) from 1.7.0 to 1.8.0.
- [Release notes](https://github.com/servo/rust-smallvec/releases)
- [Commits](servo/rust-smallvec@v1.7.0...v1.8.0)

---
updated-dependencies:
- dependency-name: smallvec
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]