feat: use default aquatic udp port for benchmarking

Becuase we are using aquatic_udp_load_test with this ocndifugration

```
Starting client with config: Config {
    server_address: 127.0.0.1:3000,
    log_level: Error,
    workers: 1,
    duration: 0,
    summarize_last: 0,
    extra_statistics: true,
    network: NetworkConfig {
        multiple_client_ipv4s: true,
        sockets_per_worker: 4,
        recv_buffer: 8000000,
    },
    requests: RequestConfig {
        number_of_torrents: 1000000,
        number_of_peers: 2000000,
        scrape_max_torrents: 10,
        announce_peers_wanted: 30,
        weight_connect: 50,
        weight_announce: 50,
        weight_scrape: 1,
        peer_seeder_probability: 0.75,
    },
}
```

share/default/config/tracker.udp.benchmarking.toml

@@ -18,4 +18,4 @@ persistent_torrent_completed_stat = false
 remove_peerless_torrents = false
 
 [[udp_trackers]]
-bind_address = "0.0.0.0:6969"
+bind_address = "0.0.0.0:3000"