v5.6.0
update base docker image (#10620)
Migrate certbot-dns-cloudflare to cloudflare 4.x SDK (#10587)
Set up dns plugins to use pyproject.toml (#10425)
stop running setup.py and switch to python -m build (#10442)
Run changelog generation stage on ubuntu-latest, nightly (#10349)
fix finish_release.py (#10503)
Add @ing mattermost notifications to release build successes and failures (#10604)
Drop in uv for pip (#10428)
Always "pipstrap" when running pip_install.py (#9658)
switch from gpg2 to gpg (#9985)
Automatically retry test farm tests (#8325)
update intersphinx mapping (#10074)
remove python 3.9 support (#10406)