Bug#880773: libpst build depends on removed libgd2*-dev provides

[Adrian Bunk]

Source: libpst
Version: 0.6.59-1
Severity: serious
Tags: buster sid

The following packages have unmet dependencies:
 builddeps:libpst : Depends: libgd2-noxpm-dev but it is not installable or
                             libgd2-xpm-dev but it is not installable


Please change the build dependency to libgd-dev.