Bump parity-db from 0.3.9 to 0.3.13 (paritytech#686)

Bumps [parity-db](https://github.com/paritytech/parity-db) from 0.3.9 to 0.3.13.
- [Release notes](https://github.com/paritytech/parity-db/releases)
- [Commits](https://github.com/paritytech/parity-db/commits)

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

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

client/db/Cargo.toml

@@ -19,7 +19,7 @@ sp-runtime = { version = "6.0.0", git = "https://github.com/paritytech/substrate
 fp-storage = { version = "2.0.0-dev", path = "../../primitives/storage" }
 
 kvdb-rocksdb = { version = "0.15.2", optional = true }
-parity-db = { version = "0.3.9", optional = true }
+parity-db = { version = "0.3.13", optional = true }
 
 [features]
 default = ["kvdb-rocksdb", "parity-db"]