Fix GDAL Tests

[rajadain]

These tests were skipped in 572e74c as part of #3420 as a consequence of failing after the Ubuntu upgrade. It was hoped that they'll fix with the Django Upgrade in #3419, but they haven't.

model-my-watershed/src/mmw/apps/geoprocessing_api/tests.py

Lines 758 to 759 in 3a63a08

	@skip('Disabling until Django Upgrade #3419')
	def test_hundred_sq_km_aoi(self):

model-my-watershed/src/mmw/apps/geoprocessing_api/tests.py

Lines 880 to 881 in 3a63a08

	@skip('Disabling until Django Upgrade #3419')
	def test_thousand_sq_km_aoi(self):

model-my-watershed/src/mmw/apps/geoprocessing_api/tests.py

Lines 1002 to 1003 in 3a63a08

	@skip('Disabling until Django Upgrade #3419')
	def test_ten_thousand_sq_km_aoi(self):

Investigate why they are failing, and fix them.

[rajadain]

Some discussion in Slack about this problem (but no clear solutions) here: https://azavea.slack.com/archives/CBM6Y3ZT8/p1639630257021600

[rajadain]

Also fix tests disabled in #3461.