Update reqwest-middleware requirement from 0.3 to 0.4 (#57)

Cargo.toml

@@ -15,7 +15,7 @@ base64 = "0.22"
 chrono = { version = "0.4", features = ["serde"] }
 http = "1"
 reqwest = { version = "0.12", features = ["json"] }
-reqwest-middleware = { version = "0.3", features = ["json"] }
+reqwest-middleware = { version = "0.4", features = ["json"] }
 rust_decimal = { version = "1.36", features = ["serde-float"] }
 serde = { version = "1", features = ["derive"] }
 serde_json = { package = "serde_json_path_to_error", version = "0.1" }