Merge pull request #71 from PacktPublishing/dependabot/pip/bleach-6.4.0

Bump bleach from 3.3.0 to 6.4.0

Author: gr33ndata

requirements.txt

@@ -1,7 +1,7 @@
 appnope==0.1.0
 attrs==19.3.0
 backcall==0.1.0
-bleach==3.3.0
+bleach==6.4.0
 blis==0.4.1
 catalogue==1.0.0
 category-encoders==2.1.0