update yaml to v6.0.2

Author: NSoiffer

addon/globalPlugins/MathCAT/yaml/__init__.py

@@ -8,7 +8,7 @@
 from .loader import *
 from .dumper import *
 
-__version__ = '6.0.1'
+__version__ = '6.0.2'
 try:
     from .cyaml import *
     __with_libyaml__ = True