chore(releng): Update ECL dependency to 1.6.0 release

Author: apeteri

releng/target-platform/target-platform.target

@@ -60,9 +60,9 @@
 		<repository location="https://download.eclipse.org/modeling/emft/mwe/updates/releases/2.11.3/"/>
 	</location>
 	<location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">
-		<repository location="mvn:com.b2international:com.b2international.snomed.ecl.update:1.5.2:zip"/>
-		<unit id="com.b2international.snomed.ecl.feature.feature.group" version="1.5.2"/>
-		<unit id="com.b2international.snomed.ecl.ui.feature.feature.group" version="1.5.2"/>
+		<repository location="mvn:com.b2international:com.b2international.snomed.ecl.update:1.6.0:zip"/>
+		<unit id="com.b2international.snomed.ecl.feature.feature.group" version="1.6.0"/>
+		<unit id="com.b2international.snomed.ecl.ui.feature.feature.group" version="1.6.0"/>
 	</location>
 </locations>
 </target>

snomed/com.b2international.snowowl.snomed.core.feature/feature.xml

@@ -16,7 +16,7 @@ Visit us at http://b2i.sg
 
    <requires>
       <import feature="com.b2international.snowowl.core.feature" version="8.0.0" match="compatible"/>
-      <import feature="com.b2international.snomed.ecl.feature" version="1.5.2"/>
+      <import feature="com.b2international.snomed.ecl.feature" version="1.6.0"/>
    </requires>
 
    <plugin