Make apt update_cache optional or ignore errors

[baedorf]

I try to execute the role on Ubuntu 20.04.5 LTS and always get failed while performing

- name: Update apt cache if MySQL is not yet installed.
  apt: update_cache=yes
  changed_when: False
  when: not mysql_installed.stat.exists

This could be because of organizational policy/restriction.
mysql can be installed even if cache was not updated.
To do this, I added ignore_errors: true in playbook, but this means that every error is ignored and not only update cache.
Would it be possible to add a variable and use this for ingore_errors on task level or to disable update cache?

[stale]

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[github-actions]

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