Mute DataTypeConversionTests.testConversionToDate

Due to https://github.com/elastic/elasticsearch/issues/35683

x-pack/plugin/sql/src/test/java/org/elasticsearch/xpack/sql/type/DataTypeConversionTests.java

@@ -61,6 +61,7 @@ public class DataTypeConversionTests extends ESTestCase {
         assertEquals("cannot cast [0xff] to [Long]", e.getMessage());
     }
 
+    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/35683")
     public void testConversionToDate() {
         DataType to = DataType.DATE;
         {