set jre to 21

Signed-off-by: Christian Dietrich <christian.dietrich.opensource@gmail.com>

Author: cdietrich

xtext-latest.target

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <?pde version="3.8"?>
 <target name="xtext-latest" sequenceNumber="36">
+	<targetJRE path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-21"/>
 	<locations>
 		<location includeAllPlatforms="false" includeConfigurePhase="false" includeMode="planner" includeSource="true" type="InstallableUnit">
 			<repository location="https://download.eclipse.org/modeling/emf/emf/builds/nightly/latest" />