Merge branch 'renovate/snowballstemmer-2.x' into 'main'

Update dependency snowballstemmer to v2.2.0

See merge request stackspin/stackspin!620

docs/requirements.txt

@@ -39,7 +39,7 @@ recommonmark==0.7.1
     # via -r requirements.in
 requests==2.26.0
     # via sphinx
-snowballstemmer==2.1.0
+snowballstemmer==2.2.0
     # via sphinx
 sphinx==4.3.0
     # via