Ruby: Add change note

hmac · hmac · commit 54b05e48a9cd · 2022-09-20T15:55:35.000+01:00
diff --git a/ruby/ql/lib/change-notes/2022-08-30-activestorage.md b/ruby/ql/lib/change-notes/2022-08-30-activestorage.md
@@ -0,0 +1,6 @@
+---
+category: minorAnalysis
+---
+* Various code executions, command executions and HTTP requests in the
+  ActiveStorage library are now recognised.
+
