RUST-686 Update base64 dependency (#233)

Author: bugadani

Cargo.toml

@@ -48,7 +48,7 @@ serde_json = { version = "1.0", features = ["preserve_order"] }
 linked-hash-map = "0.5.3"
 hex = "0.4.2"
 decimal = { version = "2.0.4", default_features = false, optional = true }
-base64 = "0.12.1"
+base64 = "0.13.0"
 lazy_static = "1.4.0"
 uuid = "0.8.1"