CompatHelper: bump compat for "DataStructures" to "0.18" (#2)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

Project.toml

@@ -10,7 +10,7 @@ ProgressMeter = "92933f4c-e287-5a05-a399-4b506db050ca"
 Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 
 [compat]
-DataStructures = "0.17"
+DataStructures = "0.17, 0.18"
 ProgressMeter = "1.2"
 Reexport = "0.2"
 julia = "1.2"