allow JLD2 compat at v0.6

Author: thchr

Project.toml

@@ -37,7 +37,7 @@ DelimitedFiles = "1"
 DocStringExtensions = "0.8, 0.9"
 GraphMakie = "0.6"
 Graphs = "1.10"
-JLD2 = "0.5"
+JLD2 = "0.5, 0.6"
 LayeredLayouts = "0.2.8"
 Makie = "0.24.3"
 Meshing = "0.7"