geos-3.8.1-r0: build failure due to ambiguous overload

geos currently fails to build for 3.12:

geos_wrap.cxx: In function 'void SWIG_RubyInitializeTrackings()':
geos_wrap.cxx:1267:85: error: call of overloaded 'rb_define_virtual_variable(const char [21], VALUE (&)(...), long int)' is ambiguous
 1267 |   rb_define_virtual_variable("SWIG_TRACKINGS_COUNT", swig_ruby_trackings_count, NULL);
      |                                                                                     ^

See: https://build.alpinelinux.org/buildlogs/build-3-12-armv7/community/geos/geos-3.8.1-r0.log