RisingWave Community - How to correctly handle timestamp data in Kafka for Flink source?

Ensure that the timestamp fields in Kafka messages are in the correct format.
Make sure that the timestamp fields are not enclosed in single quotes, as serde_json may not handle this case properly.
Update to the latest code from the main branch to ensure compatibility.
Verify that the Flink source configuration for Kafka is correctly set up to handle timestamp data.
Test the functionality after making the necessary adjustments to the timestamp format in Kafka messages.