build: temporary workaround for using trusted publisher approach

[RobPasMue]

Description

Following issues with trusted publisher listed in ansys/actions#687 - we need to limit the flit version used to build the project. This is a temporary workaround until we properly fix this issue.

Issue linked

None

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.88%. Comparing base (8ae7558) to head (0a1eba7).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1783   +/-   ##
=======================================
  Coverage   90.88%   90.88%           
=======================================
  Files          92       92           
  Lines        8357     8357           
=======================================
  Hits         7595     7595           
  Misses        762      762           

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