chore(deps): Bump scylla from 0.4.2 to 0.4.3

Bumps [scylla](https://github.com/scylladb/scylla-rust-driver) from 0.4.2 to 0.4.3.
- [Release notes](https://github.com/scylladb/scylla-rust-driver/releases)
- [Commits](scylladb/scylla-rust-driver@v0.4.2...v0.4.3)

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

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