Contribute Oomph 1.20.0 M1 for 2021-03

Change-Id: Ia04f9741e4037220c8f6307641de7bc706e0e745
Signed-off-by: Ed Merks <ed.merks@gmail.com>
diff --git a/oomph.aggrcon b/oomph.aggrcon
index 1de2f7a..ea50411 100644
--- a/oomph.aggrcon
+++ b/oomph.aggrcon
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <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="Oomph">
-  <repositories location="https://download.eclipse.org/oomph/drops/release/1.19.0" description="Oomph 1.19">
+  <repositories location="https://download.eclipse.org/oomph/drops/milestone/S20210113-015151-1.20.0-M1" description="Oomph 1.20">
     <features name="org.eclipse.oomph.setup.sdk.feature.group">
       <categories href="simrel.aggr#//@customCategories[identifier='General%20Purpose%20Tools']"/>
     </features>