Ruby: change note

Author: asgerf

ruby/ql/src/change-notes/2023-05-24-delete-name-clash.md

@@ -0,0 +1,5 @@
+---
+category: minorAnalysis
+---
+* Fixed an issue where calls to `delete` or `assoc` with a constant-valued argument would be analyzed imprecisely,
+  as if the argument value was not a known constant.