Ruby: Add change note

hmac · hmac · commit ec1d1eb54744 · 2022-07-19T14:33:51.000+12:00
diff --git a/ruby/ql/lib/change-notes/2022-07-19-arel.md b/ruby/ql/lib/change-notes/2022-07-19-arel.md
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+---
+category: minorAnalysis
+---
+* Calls to `Arel.sql` are now recognised as propagating taint from their argument.

-Original file line number
+Diff line change
@@ @@ -0,0 +1,4 @@ @@
 +---
 +category: minorAnalysis
 +---
 +* Calls to `Arel.sql` are now recognised as propagating taint from their argument.