At first sight a boring nothing special version bump.
However there are quite a few deps depending on boost
and they all need to be rebuild as well when this lands.
Some of them may have their own version bump in this
update cycle so pay attention to the order when landing
svn libs.
Direct dependencies:
Alembic *has update this cycle
USD *has update this cycle
OpenVDB *has possible update this cycle
OpenImageIO
OpenColorIO *has update this cycle
OSL *has update this cycle