Bump compat for CubedSphere to 0.3

CubedSphere 0.3 does not introduce any new feature, it moves some accessory
features out of the package. In this, most dependencies are dropped.

Author: Sbozzolo

Project.toml

@@ -48,7 +48,7 @@ BlockArrays = "0.16, 1"
 ClimaComms = "0.6"
 Combinatorics = "1"
 CountFlops = "0.1"
-CubedSphere = "0.2"
+CubedSphere = "0.2, 0.3"
 CUDA = "5"
 Dates = "1"
 DataStructures = "0.18"