Are there any best practices for ensuring that DateTimeZone::listIdentifiers stays up-to-date with changes in time zones?

The DateTimeZone::listIdentifiers method in PHP returns a list of all known time zone identifiers. To ensure that this list stays up-to-date with changes in time zones, you can periodically update the time zone database used by PHP. This can be achieved by updating the underlying operating system or manually updating the time zone database files.

// Update the time zone database on the underlying operating system
// For example, on Ubuntu, you can run the following command:
// sudo apt-get update && sudo apt-get install tzdata