The upcoming ansible-core version 2.20 will deprecate some code (like ansible.module_utils.six, ansible.module_utils._text and ansible.module_utils.common._collections_compat) and throw warnings about this. Some deprecations will make the sanity tests fail, but others might only show up as warnings when users run a playbook.
It is recommended that maintainers analyze their collections if they are using (parts of) this code, and also test with a pre-release of ansible-core (current latest one is 2.20.0rc2) to see if any deprecation warnings show up.
If so, please evaluate if it is possible for you to replace it.