pgsql: Support for ISO 8601 in the jsonpath .datetime() method

Support for ISO 8601 in the jsonpath .datetime() method The SQL standard doesn't require jsonpath .datetime() method to support the ISO 8601 format. But our to_json[b]() functions convert timestamps to text in the ISO 8601 format in the sake of compatibility with javascript. So, we add support o

pgsql: Support for ISO 8601 in the jsonpath .datetime() method

Support for ISO 8601 in the jsonpath .datetime() method The SQL standard doesn't require jsonpath .datetime() method to support the ISO 8601 format. But our to_json[b]() functions convert timestamps to text in the ISO 8601 format in the sake of compatibility with javascript. So, we add support o