Update CategoricalArrays.jl to 0.9. (#146)

Author: arvganesh

Manifest.toml

@@ -89,7 +89,7 @@ version = "3.2.0"
 deps = ["DataAPI", "Future", "JSON", "Missings", "Printf", "Statistics", "Unicode"]
 git-tree-sha1 = "a6c17353ee38ddab30e73dcfaa1107752de724ec"
 uuid = "324d7699-5711-5eae-9e2f-1d82baa6b597"
-version = "0.8.1"
+version = "0.9"
 
 [[Clustering]]
 deps = ["Distances", "LinearAlgebra", "NearestNeighbors", "Printf", "SparseArrays", "Statistics", "StatsBase"]