Contribute Buildship 3.1.5

Signed-off-by: Donat Csikos <csdonat@gmail.com>
diff --git a/buildship.aggrcon b/buildship.aggrcon
index 2256310..0d1c128 100644
--- a/buildship.aggrcon
+++ b/buildship.aggrcon
@@ -1,7 +1,7 @@
 <?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="Buildship: Eclipse Plug-ins for Gradle" label="Buildship">
-  <repositories location="https://download.eclipse.org/buildship/updates/e415/releases/3.x/3.1.4.v20200326-1743">
-    <features name="org.eclipse.buildship.feature.group" versionRange="3.1.4">
+  <repositories location="https://download.eclipse.org/buildship/updates/e416/releases/3.x/3.1.5.v20210113-0929">
+    <features name="org.eclipse.buildship.feature.group" versionRange="3.1.5">
       <categories href="simrel.aggr#//@customCategories[identifier='General%20Purpose%20Tools']"/>
     </features>
   </repositories>