community/py3-flask-wtf: fix tests

Fixes error found during 3.19 rebuild: https://build.alpinelinux.org/buildlogs/build-3-19-armv7/community/py3-flask-wtf/py3-flask-wtf-1.2.1-r0.log

assigned to @fluix

added 13 commits

• 20e81422...6e0f7ccf - 12 commits from branch alpine:master
• a3318efa - community/py3-flask-wtf: fix tests

Compare with previous version

merged