Use try-with-resources when applicable

See gh-32610

spring-jms/src/main/java/org/springframework/jms/connection/SingleConnectionFactory.java

@@ -575,14 +575,11 @@ public class SingleConnectionFactory implements ConnectionFactory, QueueConnecti
 			logger.debug("Closing shared JMS Connection: " + con);
 		}
 		try {
-			try {
+			try (con) {
 				if (this.startedCount > 0) {
 					con.stop();
 				}
 			}
-			finally {
-				con.close();
-			}
 		}
 		catch (jakarta.jms.IllegalStateException ex) {
 			logger.debug("Ignoring Connection state exception - assuming already closed: " + ex);