zodbpickle: v↑ (1.0.4 -> 2.0.0)

They say that `zodbpickle.binary` is now much more lightweight on CPython2:
https://github.com/zopefoundation/zodbpickle/blob/master/CHANGES.rst#200-2019-11-13

software/neoppod/software-common.cfg

@@ -151,7 +151,7 @@ pycurl = 7.43.0
 setproctitle = 1.1.10
 slapos.recipe.template = 4.4
 transaction = 1.7.0
-zodbpickle = 1.0.4
+zodbpickle = 2.0.0
 zodbtools = 0.0.0.dev4
 cython-zstd = 0.2
 python-dateutil = 2.7.3