Add changelog fragment of issue ansible-collections#9882

Author: ludovic

changelogs/fragments/9882-fix-payload-to-match-rocketchat-740-requirement.yml

@@ -0,0 +1,4 @@
+deprecated_features:
+  - >
+    RocketChat module - attribute ``option_is_pre740`` has been added to match the old payload. The argument default value could be set to false in a few months and then,
+    removed in a future release when Rocket Chat 7.4.0 is considered as a minimum version to be used (https://github.com/ansible-collections/community.general/pull/9882).