CompatHelper: add new compat entry for GraphViz in [weakdeps] at version 0.2, (keep existing compat)

Author: CompatHelper Julia

Diff for: Project.toml

@@ -26,6 +26,7 @@ UUIDs = "cf7118a7-6976-5b1a-9a39-7adc72f591a4"
 
 [compat]
 DataStructures = "0.18"
+GraphViz = "0.2"
 Graphs = "1"
 MacroTools = "0.5"
 MemPool = "0.4.6"
@@ -40,8 +41,8 @@ TimespanLogging = "0.1"
 julia = "1.8"
 
 [extensions]
-GraphVizSimpleExt = "Colors"
 GraphVizExt = "GraphViz"
+GraphVizSimpleExt = "Colors"
 PlotsExt = ["DataFrames", "Plots"]
 
 [extras]