Update baseline image for test_grdimage_slice and test_grdimage_default_no_shading

Author: seisman

pygmt/tests/baseline/test_grdimage_slice.png.dvc

@@ -1,4 +1,5 @@
 outs:
-- md5: 662b78f3bedde3ddf73647329bf3aab4
-  size: 72658
+- md5: 2481f1366431e4e601ccdaf25830c33e
+  size: 65041
   path: test_grdimage_slice.png
+  hash: md5

pygmt/tests/test_grdimage.py

@@ -67,7 +67,7 @@ def test_grdimage_slice(grid):
     """
     grid_ = grid.sel(lat=slice(-30, 30))
     fig = Figure()
-    fig.grdimage(grid_, cmap="earth", projection="M6i")
+    fig.grdimage(grid_, cmap="earth", projection="M10c")
     return fig
 
 
@@ -98,7 +98,7 @@ def test_grdimage_default_no_shading(grid, shading):
     """
     grid_ = grid.sel(lat=slice(-30, 30))
     fig = Figure()
-    fig.grdimage(grid_, cmap="earth", projection="M6i", shading=shading)
+    fig.grdimage(grid_, cmap="earth", projection="M10c", shading=shading)
     return fig