Log Message:
py-cyclonedx-python-lib: update to 4.0.0.

Feature

    Release 4.0.0 #341) (8fb1b14)

Breaking

    Large portions of this library have been re-written for this release and \ 
many methods and contracts have changed. (8fb1b14)
    Model classes changed to relocated Vulnerability at Bom, not at Component \ 
(8fb1b14)
    Model classes changed to relocated Vulnerability at Bom, not at Component \ 
(8fb1b14)
    (8fb1b14)