Python wheel: add lz4

[tmi]

This adds lz4 dependency on linux, to enable Orca grids

A succ build of wheels: https://github.com/ecmwf/eckit/actions/runs/14218423248

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 64.69%. Comparing base (79796d6) to head (e08896b).
Report is 4 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #173   +/-   ##
========================================
  Coverage    64.69%   64.69%           
========================================
  Files         1107     1107           
  Lines        56064    56064           
  Branches      4235     4235           
========================================
+ Hits         36268    36269    +1     
+ Misses       19796    19795    -1     

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