service auth logging

crates/jacquard-axum/src/service_auth.rs

···
     match codec {
         // p256-pub (0x1200)
         [0x80, 0x24] => PublicKey::from_p256_bytes(key_material).inspect_err(|e| {
-            error!("Failed to parse p256 public key: {}", e);
+            tracing::error!("Failed to parse p256 public key: {}", e);
         }).ok(),
         // secp256k1-pub (0xe7)
         [0xe7, 0x01] => PublicKey::from_k256_bytes(key_material).inspect_err(|e| {
-            error!("Failed to parse secp256k1 public key: {}", e);
+            tracing::error!("Failed to parse secp256k1 public key: {}", e);
         }).ok(),
         _ => {
-            error!("Unsupported public key multicodec: {:?}", codec);
+            tracing::error!("Unsupported public key multicodec: {:?}", codec);
             None
         },
     }