Hi,
PHP 7.2.31 also requires Wampserver 3.2.2. Yes, PHP versions evolve and for them to be properly supported, Wampserver must evolve too.
But don't worry, upgrading your Wampserver 3.1.0 to 3.2.2 does not require any work on your part, except to launch the update as an administrator.
Wampserver update 3.2.2 updates only "Wampmanager", does not add any Apache PHP, MySQL or MariaDB versions. It is a cumulative update. It is not necessary to apply the old updates 3.0.1 to 3.2.1 before applying 3.2.2. There will be no changes to your Apache, PHP, MySQL, MariaDB settings and versions used; your local sites and databases will not be affected. This update is necessary to install the latest Apache, PHP, MySQL or MariaDB addons.
But first, don't forget to check the VC++ packages, it's essential, the latest versions of PHP are compiled with VS16 and won't work properly if you are not up to date with the VC++ packages.
Addons, whether for PHP, MySQL, Apache or MariaDB, install new versions where needed and with the necessary options and settings without you having to worry about anything.
You just have to "switch" to the new version of the addon installed by Left Click -> PHP -> Version and choose the version you want.
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Documentation Apache -
Documentation PHP -
Documentation MySQL -
Wampserver install files & addons