[Bf-committers] Minimum Python version bumped to 3.6

[Campbell Barton]

Hi, the minimum version of Python in master is now 3.6
If you use 'install_deps.sh' on Linux, this is now updated to use the
latest Python.

If you use your platforms Python, make sure you have 3.6 and run this
from your cmake build dir:

 cmake -UPYTHON_* /path/to/blender

This removes all references to Python 3.5 so the new version can be found.
-- 
- Campbell