ci: Add cargo deny license check

[utpilla]

Follow-up to #2935

Changes

• Add cargo deny license check

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.3%. Comparing base (d8d57d8) to head (4e7ebb0).
Report is 1 commits behind head on main.

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #2936   +/-   ##
=====================================
  Coverage   81.3%   81.3%           
=====================================
  Files        126     126           
  Lines      24254   24254           
=====================================
  Hits       19736   19736           
  Misses      4518    4518           

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