Updated python-bleach packages fix security vulnerability

The updated packages fix a security vulnerability: Mutation XSS in bleach.clean when noscript and raw tag whitelisted. CVE-2020-6802...

www/py-bleach -- multiple vulnerabilities

bleach.clean behavior parsing embedded MathML and SVG content with RCDATA tags did not match browser behavior and could result in a mutation XSS. Calls to bleach.clean with strip=False and math or svg tags and one or more of the RCDATA tags script, noscript, style, noframes, iframe, noembed, or x...