setup: upper pin werkzeug

Author: zzacharo

setup.cfg

@@ -30,7 +30,8 @@ install_requires =
     Flask>=1.1.4,<3.0.0
     itsdangerous>=1.1.0,<2.1.0
     MarkupSafe>=0.23
-    Werkzeug>=1.0.1,<3.0
+    # due to https://github.com/maxcountryman/flask-login/issues/686
+    Werkzeug>=1.0.1,<2.2
     # importlib needed until Python 3.9 end of life since we're using
     # importlib.metadata features from v3.10). Version numbers are aligned with
     # Python v3.10 feature set.