refactor: use ansible.posix 2.1.X for EL7 compatibility [citest_skip]

[richm]

The recently released ansible.posix 2.2.0 does not work on EL7.
Pin the version of ansible.posix to 2.1.X.

NOTE: Even though this role might not support EL7, this update
is applied to all system roles for consistency. Plus, when this
role is part of the system roles collection, all roles must use
the same version of ansible.posix - there is no way for a role
which is part of a collection to use a different version of a
dependency than the version used by the other roles.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Pins the ansible.posix collection dependency to version 2.1.0 to maintain EL7 compatibility while keeping existing constraints for other collections unchanged.

File-Level Changes

Change	Details	Files
Pin ansible.posix collection to a specific version compatible with EL7.	Add an explicit version constraint 2.1.0 to the ansible.posix collection requirement in the Ansible collection requirements metadata file Leave the community.general collection version range unchanged	meta/collection-requirements.yml

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Hey - I've reviewed your changes and they look great!

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📥 Commits

Reviewing files that changed from the base of the PR and between 9ffa730 and 0fffabc.

📒 Files selected for processing (1)

• meta/collection-requirements.yml

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