build: skip all musllinux_i686 builds

[martibosch]

No description provided.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.10% 🎉

Comparison is base (7d0108f) 92.79% compared to head (8c1ec7d) 92.90%.
Report is 9 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #36      +/-   ##
==========================================
+ Coverage   92.79%   92.90%   +0.10%     
==========================================
  Files           6        6              
  Lines         972      972              
==========================================
+ Hits          902      903       +1     
+ Misses         70       69       -1     

Files Changed	Coverage Δ
pylandstats/zonal.py	83.58% <100.00%> (ø)

... and 1 file with indirect coverage changes

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