bug#34432: Mapnik fails to build due to boost changes

[Maxim Cournoyer]

Hi,

I've updated updated the package to 3.1.0 in
2e6be59131e9f16cbb690aaaffc0b2470dead611, but it sadly still refuse to
link against our boost 1.77.  I've reported the issue upstream [0].

Thanks,

[0]  https://github.com/mapnik/mapnik/issues/4329