Skip FastMarchingDistanceGrid tests on Windows with Python 3.12

Author: jjrob

test/GeoEco/Datasets/Virtual/FastMarchingDistanceGrid/FMDG_test.py

@@ -10,6 +10,7 @@
 import os
 import pathlib
 import pytest
+import sys
 
 from GeoEco.Logging import Logger
 from GeoEco.Datasets import NumpyGrid