[update] added JSON logging support with tracing-subscriber for production, updated dependencies in Cargo.toml and Cargo.lock

backend-rust/src/main.rs

@@ -11,12 +11,15 @@ use axum::routing::get;
 use tokio::signal;
 use tracing::{info};
 use tracing_subscriber;
+use tracing_subscriber::EnvFilter;
 
 #[tokio::main]
 async fn main() -> Result<()> {
     tracing_subscriber::fmt()
         .with_target(false)
         .compact()
+        .with_env_filter(EnvFilter::from_default_env())
+        .json()  // For production
         .init();
 
     let app_settings = AppSettings::get_app_settings();