Increase the amount of snapshot pool threads for GetSnapshotsIT (#78437)

We need that for the testSortAndPaginateWithInProgress test where we need to make sure
that one index get successfully snapshotted whilst the other one gets blocked.

server/src/internalClusterTest/java/org/elasticsearch/snapshots/GetSnapshotsIT.java

@@ -8,7 +8,6 @@
 
 package org.elasticsearch.snapshots;
 
-import org.apache.lucene.util.LuceneTestCase.AwaitsFix;
 import org.elasticsearch.action.ActionFuture;
 import org.elasticsearch.action.ActionRequestValidationException;
 import org.elasticsearch.action.admin.cluster.snapshots.create.CreateSnapshotResponse;
@@ -34,13 +33,13 @@ import static org.hamcrest.Matchers.hasSize;
 import static org.hamcrest.Matchers.in;
 import static org.hamcrest.Matchers.is;
 
-@AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/78348")
 public class GetSnapshotsIT extends AbstractSnapshotIntegTestCase {
 
     @Override
     protected Settings nodeSettings(int nodeOrdinal, Settings otherSettings) {
         return Settings.builder()
             .put(super.nodeSettings(nodeOrdinal, otherSettings))
+            .put(LARGE_SNAPSHOT_POOL_SETTINGS)
             .put(ThreadPool.ESTIMATED_TIME_INTERVAL_SETTING.getKey(), 0) // We have tests that check by-timestamp order
             .build();
     }