```
devel/py-yaml: Rename to py-pyyaml
To match upstream naming [1] move py-yaml to py-pyyaml
[1] https://wiki.freebsd.org/Python/PortsPolicy#Naming
RequestApproved by: koobs (python)
Reviewed_by: ???, maintainer)
MFH: No
Differential_Revision: D23803