Major updates

Updates to:
 + py3-srht
 + builds.sr.ht
 + git.sr.ht
 + lists.sr.ht
 + meta.sr.ht
 + todo.sr.ht
 + py3-asyncpg

Trying again with the updates to:
 + py3-ansi2html
 + py3-atpublic
 + py3-pygments

Re-releasing py3-pgpy.

Dropping py3-emailthreads.

Updating Alpine Linux to 3.17.

Revert update on ansi2html, atpublic, pygments

py3-ansi2html and py3-atpublic updates will only build on Alpine 3.16
which isn't yet the targetted version.

py3-pygments still needs to be held back for strange makedependency
incompatibility. Unsure if this will be solved by bumping Alpine
version.

Also, the dropping of py3-pgpy was greatly exaggerated. py3-srht still
depends on it. Maybe it will be dropped in a future update, hard to say.

Batch of updates

dropped
=======
py3-pgpy (?)
py3-sshpubkeys
py3-anyjson

bumped
======
builds.sr.ht
git.sr.ht
lists.sr.ht (*)
meta.sr.ht
todo.sr.ht
py3-ansi2html
py3-asyncpg (*)
py3-atpublic
py3-furl
py3-humanize
py3-minio
py3-mistletoe
py3-pgpy (?)
py3-pygments
py3-sqlalchemy-utils
py3-srht (!)

downgraded
==========
py3-billiard

re-built/re-released
====================
py3-vine

*=I don't actually build this package currently, I'm just tracking
development.

?=Re-added, but not as a dependency to anything I build. Starting now,
this package will be categorized with the *'ed packages.

!=Upstream project also re-released as r1. Starting now, I will not
blindly follow upstream's release number.

New build process

Packages can now be built with `make`. The targets are all based on the
files that are served in the official mirror.

Re-added two dependencies of todo.sr.ht that I has missed.