Update GaussianRandomFields compat (#486)

Author: nefrathenrici

Project.toml

@@ -1,7 +1,7 @@
 name = "EnsembleKalmanProcesses"
 uuid = "aa8a2aa5-91d8-4396-bcef-d4f2ec43552d"
 authors = ["CLIMA contributors <[email protected]>"]
-version = "2.4.0"
+version = "2.4.1"
 
 [deps]
 Convex = "f65535da-76fb-5f13-bab9-19810c17039a"
@@ -28,7 +28,7 @@ Convex = "0.15, 0.16"
 Distributions = "0.24.14, 0.25"
 DocStringExtensions = "0.8, 0.9"
 FFMPEG = "0.4"
-GaussianRandomFields = "2"
+GaussianRandomFields = "2.2.6"
 Interpolations = "0.13, 0.14, 0.15"
 LinearAlgebra = "1"
 MathOptInterface = "1"