[3006.x] Add mako to pkg dependencies

What does this PR do?

See title.

What issues does this PR fix or reference?

Fixes: #66091

Merge requirements satisfied?

[NOTICE] Bug fixes or features added to Salt require tests.

• [ ] Docs
• [x] Changelog - https://docs.saltproject.io/en/master/topics/development/changelog.html
• [ ] Tests written/updated