Update apache_rocketmq_update_config.rb

[jsherwood0]

Add a timeout to eliminate the hang in the check method

This fix is to ensure that if all else fails, the check will timeout and allow progress to continue instead of hanging on a host that does not reply as expected. This addresses Issue rapid7#19035.

Verification

List the steps needed to make sure this thing works

• Start msfconsole
• use exploit/multi/http/apache_rocketmq_update_config
• Set RHOSTS and RPORT to host/port that is not responding as RocketMQ should (e.g., it's down or its not RocketMQ)
• check
• Verify that the check will eventually time out even if it does not receive an expected RocketMQ response.
• Verify that the check does not hang on servers that fail to respond as expected.