Merge pull request #306 from nexB/dependabot/pip/lxml-4.6.2

Bump lxml from 4.3.3 to 4.6.2

Author: sbs2001

requirements.txt

@@ -19,7 +19,7 @@ importlib-metadata==1.3.0
 ipython==7.13.0
 ipython-genutils==0.2.0
 jedi==0.17.0
-lxml==4.3.3
+lxml==4.6.2
 more-itertools==8.0.2
 packageurl-python==0.9.3
 packaging==19.2