Log Message:
py-cyclonedx-python-lib: update to 5.2.0.

Breaking Changes

    Object model.bom_ref.BomRef's property value defaults to Null, was arbitrary \ 
UUID (#504 via #505)
    This change does not affect serialization. All bom-refs are guaranteed to \ 
have unique values on rendering.
    Removed helpers from public API (#503 via #506)

see the details here: #492