Update bbox assertion in test_random_oil_spills

Update shapely testing function re: "ShapelyDeprecationWarning: The
'almost_equals()' method is deprecated and will be removed in Shapely 2.1".

tests/test_random_oil_spills.py

@@ -28,6 +28,7 @@
 import pandas
 import pytest
 import shapely.geometry
+import shapely.testing
 import xarray
 import yaml
 
@@ -270,7 +271,7 @@ def test_get_lat_lon_indices(self, config_file):
         assert lon == pytest.approx(expected.lon)
         assert geotiff_x_index == expected.geotiff_x_index
         assert geotiff_y_index == expected.geotiff_y_index
-        assert geotiff_bbox.almost_equals(expected.geotiff_bbox)
+        shapely.testing.assert_geometries_equal(geotiff_bbox, expected.geotiff_bbox, tolerance=1e-6)
 
 
 class TestGetVesselType: