IO-1365 Update Messaging Issues.

hasura/migrations/1632265756746_run_sql_migration/down.yaml

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+[]

hasura/migrations/1632265756746_run_sql_migration/up.yaml

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+- type: run_sql
+  args:
+    cascade: false
+    read_only: false
+    sql: |-
+      CREATE OR REPLACE FUNCTION public.update_conversation_on_message()
+       RETURNS trigger
+       LANGUAGE plpgsql
+      AS $function$
+      BEGIN
+          UPDATE conversations SET updated_at = now() WHERE id = NEW.conversationid;
+          RETURN NEW;   
+      END;
+      $function$
+      ;