Reduce min proofs to 1

Author: MauroToscano

batcher/aligned-batcher/src/lib.rs

@@ -1124,7 +1124,7 @@ impl Batcher {
         let current_batch_len = batch_state_lock.batch_queue.len();
         let last_uploaded_batch_block_lock = self.last_uploaded_batch_block.lock().await;
 
-        if current_batch_len < 2 {
+        if current_batch_len < 1 {
             info!(
                 "Current batch has {} proofs. Waiting for more proofs...",
                 current_batch_len