Sink: can't create elasticsearch sink with TIMESTAMP type

[xuefengze]

Describe the bug

No response

Error message/log

Sink error: Remote sink error: java.lang.IllegalArgumentException: cannot write xcontent for unknown value of type class java.sql.Timestamp

To Reproduce

CREATE TABLE test (
  id INT,
  t  TIMESTAMP,
  PRIMARY KEY(id)
);
 
INSERT INTO test VALUES (1, '0001-01-01 00:00:00');

CREATE SINK es FROM test WITH (
    connector = 'elasticsearch',
    index = 'test',
    url = 'http://elasticsearch:9200',
    username = 'elastic',
    password = 'risingwave'
 );

Expected behavior

No response

How did you deploy RisingWave?

No response

The version of RisingWave

No response

Additional context

No response