Update to ATL 4.3.0 (release).

Change-Id: I5293e5b1968726c2f9de10660e25ec978bec8621
Signed-off-by: Dennis Wagelaar <dwagelaar@gmail.com>
diff --git a/m2m-atl.aggrcon b/m2m-atl.aggrcon
index cd0a2a0..e54bf55 100644
--- a/m2m-atl.aggrcon
+++ b/m2m-atl.aggrcon
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="ASCII"?>
 <aggregator:Contribution xmi:version="2.0" xmlns:xmi="http://www.omg.org/XMI" xmlns:aggregator="http://www.eclipse.org/cbi/p2repo/2011/aggregator/1.1.0" label="M2M ATL">
-  <repositories location="https://download.eclipse.org/mmt/atl/updates/milestones/4.3.0/S202102071102/" description="M2M ATL">
+  <repositories location="https://download.eclipse.org/mmt/atl/updates/releases/4.3.0" description="M2M ATL">
     <features name="org.eclipse.m2m.atl.sdk.feature.group" versionRange="4.3.0">
       <categories href="simrel.aggr#//@customCategories[identifier='Modeling']"/>
     </features>