Merge pull request #619 from swimos/rocks-0.22

Upgrades RocksDB to 0.22.

Author: horned-sphere

Cargo.toml

@@ -90,7 +90,7 @@ ratchet = { package = "ratchet_rs", version = "0.4" }
 ratchet_fixture = "0.4"
 flate2 = "1.0.22"
 bitflags = "1.3"
-rocksdb = "0.19.0"
+rocksdb = "0.22"
 integer-encoding = "3.0.4"
 rustls = "0.20"
 webpki = "0.22"