CompatHelper: bump compat for PrettyTables to 3, (keep existing compat)

Author: CompatHelper Julia

Project.toml

@@ -53,7 +53,7 @@ Optim = "1.7.2"
 OrderedCollections = "1.3.0"
 PDMats = "0.11.11"
 PSIS = "0.9.1"
-PrettyTables = "2.1"
+PrettyTables = "2.1, 3"
 Printf = "1"
 RCall = "0.14.7"
 Random = "1"