JS: Change note

Author: asgerf

javascript/ql/src/change-notes/2025-02-28-membership-regexp-test.md

@@ -0,0 +1,7 @@
+---
+category: fix
+---
+* Fixed a bug that would in rare cases cause some regexp-based checks
+  to seen as generic taint sanitisers, even though the underlying regexp
+  is not restrictive enough. The regexps are now analysed more precisely,
+  and unrestrictive regexp checks will no longer block taint flow.