chore: merge ethproof update

Author: Ubuntu

sdk/src/prover.rs

@@ -48,7 +48,7 @@ impl ClientCfg {
         let ca_cert_path = env::var("CA_CERT_PATH").map_or(None, |path| Some(path.to_string()));
         let cert_path = env::var("CERT_PATH").map_or(None, |x| Some(x.to_string()));
         let key_path = env::var("KEY_PATH").map_or(None, |x| Some(x.to_string()));
-        let domain_name = env::var("DOMAIN_NAME").map_or(None, |x| Some(x.to_string()));
+        let domain_name = env::var("DOMAIN_NAME").unwrap_or("stage".to_string());
         let proof_network_privkey =
             env::var("PROOF_NETWORK_PRVKEY").map_or(None, |x| Some(x.to_string()));