Fixes vscode-server-connector/issues/606 - eap 7.4 use java 17 or 21

Signed-off-by: Rob Stryker <[email protected]>

runtimes/bundles/org.jboss.tools.rsp.server.wildfly/src/main/java/org/jboss/tools/rsp/server/wildfly/servertype/capabilities/JBossEAP74ExtendedProperties.java

@@ -59,7 +59,7 @@ public String getMinimumJavaVersionString() {
 	}
 	@Override
 	public String getMaximumJavaVersionString() {
-		return "15.";
+		return "21.";
 	}
 
 }