DateTime: Replace date_i18n() with wp_date()

[JoryHogeveen]

Describe the bug

https://developer.wordpress.org/reference/functions/wp_date/
https://support.advancedcustomfields.com/forums/topic/time-field-and-wp-5-3/

This is WP 5.3+.
We could create pods_date() to handle compatibility with WP.

Additional context
https://wordpress.org/support/topic/replace-date_i18n-with-new-wp_date/

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