Ruby: Add change note

2022-10-14 20:25:24 +13:00 · 2022-10-14 20:25:24 +13:00 · 545222d1e9
--- a/ruby/ql/src/change-notes/2022-10-14-actiondispatch-response.md
+++ b/ruby/ql/src/change-notes/2022-10-14-actiondispatch-response.md
@ -0,0 +1,5 @@
+---
+category: minorAnalysis
+---
+* HTTP response header and body writes via `ActionDispatch::Response` are now
+  recognised.