chore: bump version to 0.2.2

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: ishaileshpant

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "rusd"
-version = "0.2.1"
+version = "0.2.2"
 edition = "2021"
 authors = ["Shailesh <shailesh.pant@gmail.com>"]
 description = "A high-performance Rust replacement for etcd with full Kubernetes API parity"