BUG #16309: Postgres's ISO 8601 date output is not compliant

The following bug has been logged on the website:

Bug reference:      16309
Logged by:          Charlie Hayes
Email address:      cosmotic@gmail.com
PostgreSQL version: 11.6
Operating system:   docker
Description:

Per Postgres's own documentation, ISO 8601 date output is NOT compliant
(Despite what the style name suggests):
https://www.postgresql.org/docs/12/datatype-datetime.html#DATATYPE-DATETIME-OUTPUT

The existing "Style Specification" name should be changed to something other
than ISO since it is NOT ISO compliant.

If the output from postgres cannot be parsed by a strictly ISO 8601 parser,
than it should not be considered an ISO 8601 string.

A new style should be create that is actually ISO compliant.