Merge pull request #63 from searxng/dependabot/pip/master/pygments-2.9.0

Bump pygments from 2.8.1 to 2.9.0

requirements.txt

@@ -4,7 +4,7 @@ flask-babel==2.0.0
 flask==1.1.2
 jinja2==2.11.3
 lxml==4.6.3
-pygments==2.8.1
+pygments==2.9.0
 python-dateutil==2.8.1
 pyyaml==5.4.1
 httpx[http2]==0.17.1