majak: Upgrade to Wagtail 2.13 and Django 3.2

calendar_utils/apps.py

czech_inspirational/models.py

district/models.py

districts/models.py

donate/models.py

elections2021/models.py

green_deal/models.py

majak/settings/base.py

regulace_konopi/models.py

requirements/base.txt

requirements/dev.txt

requirements/production.txt

senat_campaign/models.py

senate/models.py

uniweb/models.py