Raise minimum cmake version to 3.19

[awnawab]

A small PR that raises the minimum cmake version to 3.19 and also enforces the minimum for the populate workflow. This is needed to ensure the correct python interpreter after a system update in the Atos which installed python3.12.

[awnawab]

Hi @wdeconinck could you please review? Thanks!

[wdeconinck]

Raising the cmake minimum required may need coordination with @iainrussell . Iain, could you advise?

[awnawab]

It turns out that simply enforcing a minimum cmake version of 3.17 is also enough to fix the find_python behaviour this PR is addressing, so I've rolled it the minimum cmake version back to 3.17 as before.

[codecov-commenter]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 51.35%. Comparing base (67dd487) to head (63a3357).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop      #75   +/-   ##
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  Coverage    51.35%   51.35%           
========================================
  Files           58       58           
  Lines         4812     4812           
  Branches       449      449           
========================================
  Hits          2471     2471           
  Misses        2341     2341           

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