Close RemoteStorePinnedTimestampService on Node.close() (#16228)

Signed-off-by: Sachin Kale <sachinpkale@gmail.com>
(cherry picked from commit 96082f7)
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

server/src/main/java/org/opensearch/node/Node.java

@@ -1862,6 +1862,7 @@ public synchronized void close() throws IOException {
         toClose.add(() -> stopWatch.stop().start("transport"));
         toClose.add(injector.getInstance(TransportService.class));
         toClose.add(nodeService.getTaskCancellationMonitoringService());
+        toClose.add(injector.getInstance(RemoteStorePinnedTimestampService.class));
 
         for (LifecycleComponent plugin : pluginLifecycleComponents) {
             toClose.add(() -> stopWatch.stop().start("plugin(" + plugin.getClass().getName() + ")"));
@@ -1892,6 +1893,7 @@ public synchronized void close() throws IOException {
         if (logger.isTraceEnabled()) {
             toClose.add(() -> logger.trace("Close times for each service:\n{}", stopWatch.prettyPrint()));
         }
+
         IOUtils.close(toClose);
         logger.info("closed");
     }