Add JLD2 to test env (#606)

Author: christiangnrd

test/Project.toml

@@ -6,6 +6,7 @@ Dates = "ade2ca70-3891-5945-98fb-dc099432e06a"
 Distributed = "8ba89e20-285c-5b6f-9357-94700520ee1b"
 GPUArrays = "0c68f7d7-f131-5f86-a1c3-88cf8149b2d7"
 InteractiveUtils = "b77e0a4c-d291-57a0-90e8-8db25a27a240"
+JLD2 = "033835bb-8acc-5ee8-8aae-3f567f8a3819"
 KernelAbstractions = "63c18a36-062a-441e-b654-da1e3ab1ce7c"
 LLVM = "929cbde3-209d-540e-8aea-75f648917ca0"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"