fix: re-qualify error to warn

Author: Ludo Galabru

components/chainhook-event-observer/src/indexer/bitcoin/mod.rs

@@ -156,7 +156,7 @@ pub async fn download_and_parse_block_with_retry(
             Err(e) => {
                 errors_count += 1;
                 ctx.try_log(|logger| {
-                    slog::error!(
+                    slog::warn!(
                         logger,
                         "unable to retrieve block #{block_hash} (attempt #{errors_count}): {}",
                         e.to_string()
@@ -182,7 +182,7 @@ pub async fn download_block_with_retry(
                 Err(e) => {
                     errors_count += 1;
                     ctx.try_log(|logger| {
-                        slog::error!(
+                        slog::warn!(
                             logger,
                             "unable to retrieve block #{block_hash} (attempt #{errors_count}): {}",
                             e.to_string()
@@ -199,7 +199,7 @@ pub async fn download_block_with_retry(
             Err(e) => {
                 errors_count += 1;
                 ctx.try_log(|logger| {
-                    slog::error!(
+                    slog::warn!(
                         logger,
                         "unable to retrieve block #{block_hash} (attempt #{errors_count}): {}",
                         e.to_string()