ci: Cache konan on Github actions

[petertrr]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.82%. Comparing base (aea4cb3) to head (347c9c0).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #140   +/-   ##
=========================================
  Coverage     84.82%   84.82%           
  Complexity      218      218           
=========================================
  Files            29       29           
  Lines           659      659           
  Branches        117      117           
=========================================
  Hits            559      559           
  Misses           71       71           
  Partials         29       29           

Flag	Coverage Δ
unittests	84.82% <ø> (ø)

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