Generalize exception type

In preparation for JuliaLang/julia#41885

Author: timholy

test/test_array.jl

@@ -139,7 +139,7 @@ const AG = ArchGDAL;
         AG.readraster("ospy/data4/aster_write.img"; flags = AG.OF_UPDATE) do ds
             @test sprint(print, ds) == """
             GDAL Dataset (Driver: HFA/Erdas Imagine Images (.img))
-            File(s): 
+            File(s):
               ospy/data4/aster_write.img
 
             Dataset (width x height): 5665 x 5033 (pixels)
@@ -171,7 +171,7 @@ const AG = ArchGDAL;
             nbands = 0,
             dtype = UInt8,
         ) do dataset
-            @test_throws ArgumentError AG.RasterDataset(dataset)
+            @test_throws Union{ArgumentError,MethodError} AG.RasterDataset(dataset)
             @test_throws DimensionMismatch AG._common_size(dataset)
         end
     end