Update Graphs compat to allow all 1.x versions

Changed from '1.4' to '1' to allow upgrading to latest Graphs versions
(up to 1.13.3) while maintaining compatibility.

Author: SimonAB

Project.toml

@@ -19,7 +19,7 @@ CairoMakie = "0.15"
 DataStructures = "0.17, 0.18, 0.19"
 FileIO = "1"
 GeometryBasics = "0.5"
-Graphs = "1.4"
+Graphs = "1"
 Literate = "2"
 Makie = "0.24.3"
 NetworkLayout = "0.4.9"