Merge pull request #37 from toddbirchard/renovate/wtforms-3.x

Update dependency wtforms to v3

Author: toddbirchard

requirements.txt

@@ -22,4 +22,4 @@ tenacity==6.2.0; python_version >= "2.7" and python_full_version < "3.0.0" or py
 uwsgi==2.0.19.1
 webassets==2.0
 werkzeug==1.0.1; python_version >= "2.7" and python_full_version < "3.0.0" or python_full_version >= "3.5.0"
-wtforms==2.3.3
+wtforms==3.0.0