package/python-html5lib: add CPE variables

cpe:2.3:a:html5lib:html5lib is a valid CPE identifier for this package:

  https://nvd.nist.gov/products/cpe/detail/97A353CC-7402-4606-93CA-111308296748

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
1 file changed