minor #15055 [Messenger] Added note about timezone (Nyholm)

This PR was merged into the 4.4 branch.

Discussion
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[Messenger] Added note about timezone

This will fix #15004

Commits
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c55c2a2 [Messenger] Added note about timezone

Author: javiereguiluz

messenger.rst

@@ -1001,6 +1001,12 @@ auto_setup          Whether the table should be created
                     automatically during send / get.       true
 ==================  =====================================  ======================
 
+.. caution::
+
+    Messages are stored in the database will have a datetime property which is created
+    with the timezone of the current system. This may cause issues if multiple machines
+    with different timezone configuration is using the same storage.
+
 Redis Transport
 ~~~~~~~~~~~~~~~