Drop python 3.8 and 3.9 support, unify github action jobs

Coverage Report

File	Stmts	Miss	Cover	Missing
phac_aspc/django
excel.py	148	28	81%	17–18, 49, 71, 81, 85, 119–121, 125–129, 132–133, 162, 170, 187–188, 214, 217, 219, 221, 224, 230, 236, 255–256, 263–264
fields.py	79	16	80%	46, 67–80, 102–105, 120–125, 128–132
phac_aspc/django/admin/decorators
admin_decorators.py	18	2	89%	37–38
phac_aspc/django/helpers/auth
backend.py	28	28	0%	2–36
views.py	44	27	39%	21, 26–29, 34–42, 47–99
phac_aspc/django/helpers/locale
code.py	8	3	62%	10, 13–14
phac_aspc/django/helpers/templatetags
phac_aspc_auth.py	7	1	86%	13
phac_aspc_localization.py	11	4	64%	11, 26–29
phac_aspc/django/helpers/views
wet.py	10	6	40%	12–19
phac_aspc/django/localization
hooks.py	6	6	0%	2–16
phac_aspc/django/localization/decorators
__init__.py	2	2	0%	4–6
localization_decorators.py	11	11	0%	4–46
phac_aspc/django/settings
security.py	25	12	52%	41–69
utils.py	54	2	96%	103, 154
TOTAL	561	148	74%

Tests	Skipped	Failures	Errors	Time
18	0 :zzz:	0 :x:	0 :fire:	1.564s :stopwatch:

PHACDataHub / django-phac_aspc-helpers