Log Message:
The need for php-mysql seems to have vanished a long time ago.  This package
is quite happy to use php-mysqlnd, which in turn is a built-in component
of all versions of PHP in Pkgsrc.

Drop the dependency, and therefore expand the PHP_VERSIONS_ACCEPTED
constraint.

ZoneMinder 1.29.0 seems to work fine on at least PHP 5.6 and 7.4.

Under PHP 8.0 it is logging at Error level type errors out of skin.js.

Under PHP 8.1 it is logging at Panic level that strftime is deprecated.

Bump PKGREVISION.