CompatHelper: bump compat for JLD2 to 0.6, (keep existing compat) (#25)

Co-authored-by: CompatHelper Julia <compathelper_noreply@julialang.org>
Co-authored-by: Phillip Alday <me@phillipalday.com>

Author: 3 people

Project.toml

@@ -25,7 +25,7 @@ MixedModelsSerializationEffectsExt = ["DataFrames", "Effects"]
 DataFrames = "1"
 Effects = "1"
 GLM = "1"
-JLD2 = "0.4.22"
+JLD2 = "0.4.22, 0.5, 0.6"
 MixedModels = "5.0.3"
 StatsAPI = "1"
 StatsBase = "0.33, 0.34"