Ports with version numbers going backwards: devel/py-pytest, devel/py-pytest...

** The following ports have a version number that sorts before a previous one **

 For many package tools to work correctly, it is of utmost importance that
 version numbers of a port form a monotonic increasing sequence over time.
 Refer to the FreeBSD Porter's Handbook, 'Package Naming Conventions' for
 more information. Tools that won't work include pkg_version, portupgrade
 and portaudit. A common error is an accidental deletion of PORTEPOCH.

 Please fix any errors as soon as possible.

 The ports tree was updated at Wed Aug  4 2021 12:30:00 UTC.

- *devel/py-pytest* <python@FreeBSD.org>: py38-pytest-4.6.11 < py38-pytest-6.2.4

- *devel/py-pytest-flask* <meka@tilda.center>: py38-pytest-flask-0.15.1 < py38-pytest-flask-1.2.0

- *devel/py-pytest-translations* <meka@tilda.center>: py38-pytest-translations-2.0.0 < py38-pytest-translations-3.1.0

- *devel/py-pytest-xdist* <koobs@FreeBSD.org>: py38-pytest-xdist-1.32.0 < py38-pytest-xdist-2.3.0

- *www/firefox-esr* <gecko@FreeBSD.org>: firefox-esr-78.13.0 < firefox-esr-78.12.0,1