Update connections.py (#396)

Allows values like `float('inf')` to retry infinite. This can be useful in cluster contexts where a redis service might temporarily not available for some reason but you might not want the worker to crash on that but waiting until redis is available again

arq/connections.py

@@ -280,7 +280,7 @@ def pool_factory(*args: Any, **kwargs: Any) -> ArqRedis:
         except (ConnectionError, OSError, RedisError, asyncio.TimeoutError) as e:
             if retry < settings.conn_retries:
                 logger.warning(
-                    'redis connection error %s:%s %s %s, %d retries remaining...',
+                    'redis connection error %s:%s %s %s, %s retries remaining...',
                     settings.host,
                     settings.port,
                     e.__class__.__name__,