Add change note

atorralba · atorralba · commit d54c4446062a · 2023-04-26T10:07:49.000+02:00
diff --git a/java/ql/lib/change-notes/2022-09-22-stringjoiner-summaries.md b/java/ql/lib/change-notes/2022-09-22-stringjoiner-summaries.md
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+---
+category: minorAnalysis
+---
+* Added new flow steps for `java.util.StringJoiner`.
+  

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 +---
 +category: minorAnalysis
 +---
 +* Added new flow steps for `java.util.StringJoiner`.
++