Update poetry lockfile. Advances AlekSIS/official/AlekSIS#316.

See merge request !27

Update lockfile. Advances AlekSIS/official/AlekSIS#305

See merge request !26

Update dependency flake8-rst-docstrings to ^0.0.14

See merge request !24

# Conflicts:
#   poetry.lock

Update dependency pytest-django to v4

See merge request !25

Update dependency feedparser to v6

See merge request !22

Update lockfile

See merge request !23

Update dependency flake8-isort to v4

See merge request !21

Update dependency pytest to v6

See merge request !20

Update dependency isort to v5

See merge request !19

Revert "Merge branch 'renovate/flake8-black-0.x' into 'master'"

See merge request !18

This reverts merge request !17

Update dependency flake8-black to ^0.2.0

See merge request !17

Enable testsuite and lint

See merge request !16