[Papyrus] Update to the 2020-12 release

Change-Id: I04d2e6d187c16e61f556e53e492f98beca854581
Signed-off-by: Quentin Le Menez <quentin.lemenez@cea.fr>
diff --git a/mdt-papyrus.aggrcon b/mdt-papyrus.aggrcon
index ffd8dfc..433f808 100644
--- a/mdt-papyrus.aggrcon
+++ b/mdt-papyrus.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" description="Contribution of the Modeling Papyrus project" label="Papyrus">
-  <repositories location="https://download.eclipse.org/modeling/mdt/papyrus/updates/milestones/5.0/RC2/main/" description="Papyrus">
+  <repositories location="https://download.eclipse.org/modeling/mdt/papyrus/updates/releases/2020-12/5.0.0/main/" description="Papyrus">
     <features description="Papyrus SDK Feature" name="org.eclipse.papyrus.sdk.feature.feature.group" versionRange="5.0.0">
       <categories href="simrel.aggr#//@customCategories[identifier='Modeling']"/>
     </features>