fix(db): Log loong transaction times at debug level

Signed-off-by: Josh <josh.t.richards@gmail.com>

Author: joshtrichards

lib/private/DB/Connection.php

@@ -688,7 +688,7 @@ public function commit() {
 			$timeTook = microtime(true) - $this->transactionActiveSince;
 			$this->transactionActiveSince = null;
 			if ($timeTook > 1) {
-				$this->logger->warning('Transaction took ' . $timeTook . 's', ['exception' => new \Exception('Transaction took ' . $timeTook . 's')]);
+				$this->logger->debug('Transaction took ' . $timeTook . 's', ['exception' => new \Exception('Transaction took ' . $timeTook . 's')]);
 			}
 		}
 		return $result;
@@ -700,7 +700,7 @@ public function rollBack() {
 			$timeTook = microtime(true) - $this->transactionActiveSince;
 			$this->transactionActiveSince = null;
 			if ($timeTook > 1) {
-				$this->logger->warning('Transaction rollback took longer than 1s: ' . $timeTook, ['exception' => new \Exception('Long running transaction rollback')]);
+				$this->logger->debug('Transaction rollback took longer than 1s: ' . $timeTook, ['exception' => new \Exception('Long running transaction rollback')]);
 			}
 		}
 		return $result;