Update AlphaFold prediction to use version 2.3.0 which handles larger structures

[Tom Goddard]

The AlphaFold 2.3.0 release made December 13, 2022 has memory optimizations that allow predicting larger multimers. Also the network parameters have been update and are supposed to give more accurate predictions for large proteins. And the sequence databases have been updated.

We should update to use this if possible. Currently we use ColabFold, so it will require ColabFold to support the new AlphaFold 2.3.0. I made a ticket on the ColabFold github to ask for that update

​https://github.com/sokrypton/ColabFold/issues/345