build(deps): bump smallvec from 1.15.0 to 1.15.1

Bumps [smallvec](https://github.com/servo/rust-smallvec) from 1.15.0 to 1.15.1.
- [Release notes](https://github.com/servo/rust-smallvec/releases)
- [Commits](servo/rust-smallvec@v1.15.0...v1.15.1)

---
updated-dependencies:
- dependency-name: smallvec
  dependency-version: 1.15.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]