CompatHelper: bump compat for "PrettyTables" to "2.0"

Author: github-actions[bot]

Project.toml

@@ -53,7 +53,7 @@ OrderedCollections = "1.4"
 Parameters = "0.12"
 ParetoSmooth = "0.7"
 ParetoSmoothedImportanceSampling = "1"
-PrettyTables = "1.0"
+PrettyTables = "1.0, 2.0"
 Reexport = "1.2"
 Requires = "1.0"
 StatsBase = "0.33"