package resource-pooling

1.3

• Replace the deprecated lwt_log with logs/logs.lwt for logging (Server_pool.section is now a Logs.src instead of Lwt_log.section). This removes the lwt_log dependency, which capped lwt < 6.0.0, and thus unblocks builds against Lwt >= 6.
• Depend explicitly on lwt.unix (previously pulled transitively via lwt_log).