CompatHelper: bump compat for CTModels to 0.6 for package docs, (drop existing compat)

Author: CompatHelper Julia

docs/Project.toml

@@ -25,7 +25,7 @@ ADNLPModels = "0.8"
 CTBase = "0.16"
 CTDirect = "0.14"
 CTFlows = "0.8"
-CTModels = "0.5"
+CTModels = "0.6"
 CTParser = "0.4"
 CommonSolve = "0.2"
 DataFrames = "1"