Update PackageInfo.g and CI suite

[stertooy]

This PR updates all actions used in the CI workflow to the latest version, and makes use of the new Dependencies.NeededSystemPackages field in PackageInfo.g to simplify the CI workflow(s).

Remarks:

• I also updated the "manuals" portion of the CI script. For packages under the gap-packages organisation, this job has been split into a separate workflow.
• The Dependencies.ExternalConditions is empty. Since this package relies on external software, it probably shouldn't be.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.43%. Comparing base (554cb61) to head (95a9188).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master      #52   +/-   ##
=======================================
  Coverage   89.43%   89.43%           
=======================================
  Files           5        5           
  Lines         899      899           
  Branches       30       30           
=======================================
  Hits          804      804           
  Misses         91       91           
  Partials        4        4           

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• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[kamalsaleh]

Thank you a lot