BuildRequires: s/postgresql-devel/postgresql-server-devel/
    
    Development files used to build PostgreSQL extensions are moved to
    'postgresql-server-devel' package, client library is moved to
    'libpq' (and 'libpq-devel').  Per devel list discussion:
    https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org/message/U3XR5EGU2TPI2CDHBRBUD4M4LK5OHKU3/
    
    Also drop 'postgresql-libs' explicit requires, we don't seem to
    depend on libpq.so.5 and even if we did - postgresql-server
    depends on 'libpq.so.5()' soname.
    
    Related: rhbz#1618698
    Version: 0.5.4-22