Merge pull request #1276 from searxng/dependabot/pip/master/lxml-4.9.0

Bump lxml from 4.8.0 to 4.9.0

requirements.txt

@@ -3,7 +3,7 @@ babel==2.10.1
 flask-babel==2.0.0
 flask==2.1.2
 jinja2==3.1.2
-lxml==4.8.0
+lxml==4.9.0
 pygments==2.12.0
 python-dateutil==2.8.2
 pyyaml==6.0