There are various variables that deploy_config.yml depends on. These need to be added to the inventory unless they have a default value.
Set these to configure ansible
The ansible inventory path. ANSIBLE_INVENTORY
The ansible vault password file: ANSIBLE_VAULT_PASSWORD_FILE
deploy_config.yml is configured to execute on hosts that are in the home_assistant group.
The playbook is configured to run as root. This can be changed with setting the ansible variable hass_remote_user
Might be good to run with diff and check to make sure it all looks good
ansible-playbook deploy_config.yml --diff --check
Remove --check to apply the changes