ansible: fix filter plugin and Jinja templates for Ansible >=12

[targos]

Closes: #4157

[targos]

Note that I have "tested" it by starting a playbook and observing that the error is not there anymore. I am not certain that the behavior is identical.

[targos]

Tested more with #4368. It doesn't work: [ERROR]: Task failed: Module failed: No package(s) matching '[]' available

[targos]

I added some debug logs and it seems the change works as expected. Maybe there's another breaking change in Ansible.

[targos]

I think it's https://docs.ansible.com/projects/ansible/latest/porting_guides/porting_guide_core_2.19.html#id22

I added another commit to use a list literal instead of a string.