Bump kvdb-rocksdb from 0.15.1 to 0.15.2 (#5166)

Bumps [kvdb-rocksdb](https://github.com/paritytech/parity-common) from 0.15.1 to 0.15.2.
- [Release notes](https://github.com/paritytech/parity-common/releases)
- [Commits](https://github.com/paritytech/parity-common/compare/kvdb-rocksdb-v0.15.1...kvdb-rocksdb-v0.15.2)

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

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

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