Upgrade sha2 to workspace version or validator-client

Author: octol

Cargo.lock

@@ -56,7 +56,7 @@ cw4 = { workspace = true }
 cw-controllers = { workspace = true }
 prost = { workspace = true, default-features = false }
 flate2 = { workspace = true }
-sha2 = { version = "0.9.5" }
+sha2 = { workspace = true }
 itertools = { workspace = true }
 zeroize = { workspace = true, features = ["zeroize_derive"] }
 cosmwasm-std = { workspace = true }