Mute failing searchable snapshot integ tests (#6781) (#6782)

(cherry picked from commit 36bc70c)

Signed-off-by: Kunal Kotwani <kkotwani@amazon.com>
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

server/src/internalClusterTest/java/org/opensearch/snapshots/SearchableSnapshotIT.java

@@ -522,6 +522,7 @@ private boolean isFileCacheEmpty(FileCacheStats stats) {
         return stats.getUsed().getBytes() == 0L && stats.getActive().getBytes() == 0L;
     }
 
+    @AwaitsFix(bugUrl = "https://github.com/opensearch-project/OpenSearch/issues/6738")
     public void testPruneFileCacheOnIndexDeletion() throws Exception {
         final String snapshotName = "test-snap";
         final String repoName = "test-repo";
@@ -544,6 +545,7 @@ public void testPruneFileCacheOnIndexDeletion() throws Exception {
         assertAllNodesFileCacheEmpty();
     }
 
+    @AwaitsFix(bugUrl = "https://github.com/opensearch-project/OpenSearch/issues/6686")
     public void testCacheFilesAreClosedAfterUse() throws Exception {
         final int numReplicasIndex = randomIntBetween(1, 4);
         final String indexName = "test-idx";