requirement.yml version needs to be updated for the ELK cookbook

https://github.com/geerlingguy/ansible-for-devops/blob/master/elk/requirements.yml

These should be updated to reflect the latest versions, as the provisioning on ansible [core 2.16.4] will not work. This is because the imported roles contain "include" directives which have been removed from ansible.

This also requires update on Chapter 9, pg. 235 of the book (version 2023-06-29).

Start with elk/requirements.yml and inspect the imported role versions against Ansible core 2.16.4, then review Chapter 9, page 235 in the 2023-06-29 book version. Update the requirement references and the corresponding book instructions so ELK provisioning no longer relies on removed include directives, and verify the provisioning example works.

Written by the indexing model from the issue text.