update Eclipse 2021-09 release URL

Author: abstratt

textuml-dependencies/textuml-dependencies.target

@@ -12,7 +12,7 @@
 			<unit id="org.eclipse.ocl.all.sdk.feature.group" version="0.0.0" />
             <unit id="org.eclipse.uml2.sdk.feature.group" version="0.0.0" />
             <!-- Specific release to avoid Eclipse bug 430375 -->
-			<repository location="http://download.eclipse.org/releases/2021-09/202108271000" />
+			<repository location="http://download.eclipse.org/releases/2021-09/202109151000"/>
 		</location>
 
 		<location includeAllPlatforms="false" includeMode="planner"