Bump ansible-core to address package support issues

[howard-e]

Thursday's latest deploy to the staging environment caused an error with the following message:

ModuleNotFoundError: No module named 'ansible.module_utils.six.moves'

ubuntu-latest was recently updated to Ubuntu 24.0.1, updated from the recent 22 LTS. This suggests that the previously packaged python six module wasn't included by default in 24 as it was in 22.

Running the following would also address this error:

pip install six

But after checking the ansible-core release versions, we've long since been at EOL (Nov 2022). So I'd like to take the chance to bump ansible-core from 2.11 to 2.16. I've also confirmed this builds and deploys as expected with minimal changes to the tasks (using include_tasks or import_tasks in place of include, introduced in ansible-core 2.12).

[stalgiag]

Thanks for looking into this! The updates to the Ansible YAML files make sense with the changes you linked to in ansible. I also welcome the small improvements to formatting consistency in the README.

[jugglinmike]

Wonderful! Nice work, @howard-e :)