C#: Add change note.

michaelnebel · michaelnebel · commit 9563705eb3e0 · 2024-02-28T14:53:15.000+01:00
diff --git a/csharp/ql/lib/change-notes/2024-02-28-refreadonly-parameter.md b/csharp/ql/lib/change-notes/2024-02-28-refreadonly-parameter.md
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+---
+category: minorAnalysis
+---
+* C# 12: Add extractor and QL library support for `ref readonly` parameters.

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 +---
 +category: minorAnalysis
 +---
 +* C# 12: Add extractor and QL library support for `ref readonly` parameters.