Mute MlAssignmentPlannerUpgradeIT

x-pack/qa/rolling-upgrade/src/test/java/org/elasticsearch/upgrades/MlAssignmentPlannerUpgradeIT.java

@@ -65,6 +65,7 @@ public class MlAssignmentPlannerUpgradeIT extends AbstractUpgradeTestCase {
         RAW_MODEL_SIZE = Base64.getDecoder().decode(BASE_64_ENCODED_MODEL).length;
     }
 
+    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/101926")
     public void testMlAssignmentPlannerUpgrade() throws Exception {
         assumeTrue("NLP model deployments added in 8.0", isOriginalClusterVersionAtLeast(Version.V_8_0_0));
         assumeFalse("This test deploys multiple models which cannot be accommodated on a single processor", IS_SINGLE_PROCESSOR_TEST);