fix: revert change to getContent

Author: exaby73

src/Neo4j/Neo4jConnectionPool.php

@@ -186,7 +186,7 @@ private function routingTable(BoltConnection $connection, SessionConfiguration $
         /** @var array{rt: array{servers: list<array{addresses: list<string>, role:string}>, ttl: int}} $route */
         $route = $bolt->route([], [], ['db' => $config->getDatabase()])
             ->getResponse()
-            ->getContent();
+            ->content;
 
         ['servers' => $servers, 'ttl' => $ttl] = $route['rt'];
         $ttl += time();