[TD] attempt to fix CI compiler error

- reported here: https://gitlab.com/freecad/FreeCAD-CI/-/jobs/3127855862
(compiles fine with Visual Studio, thus I can only guess)

src/Mod/TechDraw/App/GeometryObject.cpp

@@ -34,6 +34,7 @@
 #include <BRepTools.hxx>
 #include <gp_Ax2.hxx>
 #include <gp_Dir.hxx>
+#include <gp_Trsf.hxx>
 #include <gp_Vec.hxx>
 #include <HLRBRep.hxx>
 #include <HLRBRep_Algo.hxx>