ci: keep simba-plugin-geometry tag

[RobPasMue]

Keeping whatever image the Simba team is using internally.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.94%. Comparing base (7039139) to head (a77ed73).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1739   +/-   ##
=======================================
  Coverage   90.94%   90.94%           
=======================================
  Files          91       91           
  Lines        8006     8006           
=======================================
  Hits         7281     7281           
  Misses        725      725           

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