graphics/sverchok-blender: Update to 0.5.9.6.2-452

0.5.9.6.2 was failing to initialize in some cases for some reason.
The upstream suggested to update to the current revision.

Reported by: Stari Karp <starikarp@yandex.com>
Approved by: tcberner (mentor)
Differential Revision: https://reviews.freebsd.org/D14080