added note about clearing yum cache on upgrade (#1115) (#1182)

Cherry-picked from #1115

Co-authored-by: Jenny Owen <[email protected]>

Author: renetapopova

modules/ROOT/pages/installation/linux/rpm.adoc

@@ -64,6 +64,12 @@ gpgcheck=1
 EOF
 ----
 
+[NOTE]
+====
+If you are upgrading from Neo4j 4.4 or earlier, you may need to clear the package manager cache before Neo4j packages become available:
+
+`yum clean dbcache`
+====
 
 === Install Neo4j