Update push-to-cloud.adoc

add recommendation

Author: fiquick

modules/ROOT/pages/tools/neo4j-admin/push-to-cloud.adoc

@@ -5,6 +5,11 @@
 
 The `neo4j-admin push-to-cloud` command uploads a database or a dump into a Neo4j Aura instance. +
 
+[NOTE]
+====
+To upload a 4.3 database in Aura, it is highly recommended to first upgrade it to 4.4 and then use the `neo4j-admin push-to-cloud command`.
+====
+
 The following table shows the compatibility between the dump version that you want to upload and the version of the Neo4j Aura instance.
 
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