CompatHelper: bump compat for DataStructures to 0.19, (keep existing compat) (#248)

Co-authored-by: CompatHelper Julia <compathelper_noreply@julialang.org>
Co-authored-by: Matt Fishman <mtfishman@users.noreply.github.com>

Author: 3 people

Project.toml

@@ -1,7 +1,7 @@
 name = "ITensorNetworks"
 uuid = "2919e153-833c-4bdc-8836-1ea460a35fc7"
 authors = ["Matthew Fishman <mfishman@flatironinstitute.org>, Joseph Tindall <jtindall@flatironinstitute.org> and contributors"]
-version = "0.13.15"
+version = "0.13.16"
 
 [deps]
 AbstractTrees = "1520ce14-60c1-5f80-bbc7-55ef81b5835c"
@@ -54,7 +54,7 @@ Adapt = "4"
 Combinatorics = "1"
 Compat = "3, 4"
 DataGraphs = "0.2.3"
-DataStructures = "0.18"
+DataStructures = "0.18, 0.19"
 Dictionaries = "0.4"
 Distributions = "0.25.86"
 DocStringExtensions = "0.9"