Debug log level in monero harness tests to see RPC responses

CI keeps failing when generating blocks, but response is only printed on debug level.
To investigate what is the problem change monero-harness log levels to debug.

monero-harness/tests/testutils/mod.rs

@@ -15,7 +15,7 @@ pub fn init_tracing() -> DefaultGuard {
 
     let global_filter = tracing::Level::WARN;
     let test_filter = tracing::Level::DEBUG;
-    let monero_harness_filter = tracing::Level::INFO;
+    let monero_harness_filter = tracing::Level::DEBUG;
 
     use tracing_subscriber::util::SubscriberInitExt as _;
     tracing_subscriber::fmt()