CompatHelper: bump compat for DataStructures to 0.19, (keep existing compat)

Author: CompatHelper Julia

Project.toml

@@ -17,7 +17,7 @@ Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 [compat]
 Aqua = "0.6"
 ArnoldiMethod = "0.4"
-DataStructures = "0.17, 0.18"
+DataStructures = "0.17, 0.18, 0.19"
 Documenter = "0.27"
 Inflate = "0.1.3"
 JuliaFormatter = "1"