Fix and enable kudu update test

plugin/trino-kudu/src/test/java/io/trino/plugin/kudu/TestKuduConnectorTest.java

@@ -927,19 +927,19 @@ public void testRowLevelDelete()
     }
 
     /**
-     * This test fails intermittently because Kudu doesn't have strong enough
-     * semantics to support writing from multiple threads.
+     * createTableForWrites will create the table using the first column as the primary key.
+     * Attempting to update the primary key (`nationkey` in this case) caused a failure due to duplicate values.
+     * This override modifies the test to focus on updating the `regionkey` instead.
      */
     @Test
-    @Disabled
     @Override
     public void testUpdate()
     {
         withTableName("test_update", tableName -> {
             createTableForWrites("CREATE TABLE %s " + NATION_COLUMNS, tableName, Optional.empty());
             assertUpdate("INSERT INTO " + tableName + " SELECT * FROM nation", 25);
-            assertUpdate("UPDATE " + tableName + " SET nationkey = 100 WHERE regionkey = 2", 5);
-            assertQuery("SELECT count(*) FROM " + tableName + " WHERE nationkey = 100", "VALUES 5");
+            assertUpdate("UPDATE " + tableName + " SET regionkey = 100 WHERE regionkey = 2", 5);
+            assertQuery("SELECT count(*) FROM " + tableName + " WHERE regionkey = 100", "VALUES 5");
         });
     }