add missing dep

Author: bplatak

Cargo.lock

@@ -14,8 +14,8 @@ serde_json = "1.0"
 derive_more = { version = "1.0.0", features = ["from"] }
 itertools = "0.13.0"
 rust_decimal = "1.36.0"
-base64 = "0.22.1"
 protobuf = "3.7.2"
+humantime-serde = "1.1.1"
 
 [dev-dependencies]
 bincode = "1.3.3"