Fix: Remove use of serde_json for getting public

src/bin/validator.rs

@@ -117,9 +117,8 @@ impl IntoAsync<AppContext> for CliOpts {
             .await
             .expect("Couldn't parse public key response from bundler");
 
-        let public_response = serde_json::from_str::<String>(&n_response).unwrap();
         let bundler_jwk =
-            public_only_jwk_from_rsa_n(&public_response).expect("Failed to decode bundler key");
+            public_only_jwk_from_rsa_n(&n_response).expect("Failed to decode bundler key");
         let validator_jwk: JsonWebKey = {
             let file = fs::read_to_string(&self.validator_key).unwrap();
             file.parse().unwrap()