Merge pull request #153 from searxng/dependabot/pip/master/sphinx-tabs-3.1.0

Bump sphinx-tabs from 3.0.0 to 3.1.0

requirements-dev.txt

@@ -11,7 +11,7 @@ Pallets-Sphinx-Themes==2.0.1
 Sphinx==4.0.2
 sphinx-issues==1.2.0
 sphinx-jinja==1.1.1
-sphinx-tabs==3.0.0
+sphinx-tabs==3.1.0
 sphinxcontrib-programoutput==0.17
 sphinx-autobuild==2021.3.14
 linuxdoc==20210324