[CI] Muting method testFollowIndex in IndexFollowingIT

Relates to #38949

Author: iverase

x-pack/plugin/ccr/src/test/java/org/elasticsearch/xpack/ccr/IndexFollowingIT.java

@@ -103,6 +103,7 @@
 
 public class IndexFollowingIT extends CcrIntegTestCase {
 
+    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/38949")
     public void testFollowIndex() throws Exception {
         final int numberOfPrimaryShards = randomIntBetween(1, 3);
         int numberOfReplicas = between(0, 1);