Introduce new image tagging strategy

[eliecharra]

Description of the change

Introduce new tagging strategy.
So far we do not change the :latest tag, it will stay on ansible v7 to avoid introducing BC breaks.
Check out the readme for more details.

Fix #19 and #16

Type of change

• Bug fix (non-breaking change that fixes an issue);
• New feature (non-breaking change that adds functionality);
• Breaking change (fix or feature that would cause existing functionality not to work as expected);
• Other (miscellaneous, GitHub workflow changes, changes to the PR template);

Checklists

Development

• Parts of this pull request impacting core (user-facing, documented) product functionality have test coverage;

Code review

• This pull request has a descriptive title and sufficient context for a reviewer. There may be a screenshot or screencast attached;
• This pull request is no longer a draft;
• You have reviewed this Pull Request yourself;

[eliecharra]

@michalg9 Could you have a look at this PR when you'll find some time? 🙏🏻