Added cartopy setup o test_geoarray to make CI work.

Signed-off-by: Daniel Scheffler <danschef@gfz-potsdam.de>
2 jobs for enhancement/replace_basemap_with_cartopy in 45 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed #43008
test_geoarray

00:00:37

70.0%
passed #43009
test_styles

00:00:08