feature flag proxy

Author: isabelatkinson

src/client/csfle/state_machine.rs

@@ -64,6 +64,7 @@ impl CryptExecutor {
             metadata_client: None,
             #[cfg(feature = "azure-kms")]
             azure: azure::ExecutorState::new()?,
+            #[cfg(feature = "socks5-proxy")]
             proxy: None,
         })
     }