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 in the collection requirements to maintain EL7 compatibility.

File-Level Changes

Change	Details	Files
Pin ansible.posix collection dependency to version 2.1.0 for compatibility with EL7.	Update the ansible.posix collection requirement to include an explicit version constraint 2.1.0 in the meta collection requirements file Ensure future installs use ansible.posix 2.1.0 instead of implicitly pulling newer incompatible versions	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 a9a2e25 and b4d6770.

📒 Files selected for processing (1)

• meta/collection-requirements.yml

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