editors/vim: Update to 9.1.1723

This update changes how python plugins are handled. Previosuly, we
linked directly against python, requiring all vim installations to
have a dependency on python. Perhaps that's fine for flavours like
gtk20 and gtk30, but it's burdensome and often unexpected for TUI
users.

Now, we use dynamic loading of python libraries, which means that
vim should automatically support python plugins if python is
installed. If python is NOT installed, no harm/no foul, just no
python plugin support.

I'm not expecting this to cause any issues, but if it does please
reach out!