Use univers 30+. Bump lxml

Signed-off-by: Philippe Ombredanne <pombredanne@nexb.com>

Author: pombredanne

requirements.txt

@@ -8,13 +8,12 @@ django-widget-tweaks>=1.4.8
 packageurl-python>=0.9.4
 binaryornot>=0.4.4
 GitPython>=3.1.17
-#univers>=21.4.16.6
-git+https://github.com/nexB/univers
+univers>=30.0.0
 saneyaml>=0.5.2
 beautifulsoup4>=4.9.3
 python-dateutil>=2.8.1
 toml>=0.10.2
-lxml>=4.6.3
+lxml>=4.6.4
 gunicorn>=20.1.0
 django-environ==0.4.5
 defusedxml==0.7.1