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.

todo.sr.ht version upgrade

I pushed this upgrade through in the hope that it would fix
https://todo.dominic-ricottone.com/~dricottone/huttese/4 .

Unfortunately, it did not. Nonetheless, the package is upgraded.

Updates from first deployment

git.sr.ht target was mangled.

py3-colour, builds.sr.ht, and py3-srht target versions had to be bumped
down. The first is due to a unit test error; the others are due to
unreleased versions that apparently upstream is keeping private.

Several APKBUILD files had to be updated for version numbers and
checksums. Notably, py3-pygments had to be bumped down a version. It
seems that an updated APKBUILD was pushed to the repo before an updated
apk was pushed to the mirror. I am choosing to follow the mirror as the
canonical target.

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.

Reshaping repo

The repo is designed for use with an existing builds.sr.ht service.
Besides lacking that, I am more interested in a containerized workflow
powered by a Makefile. Package source code will live in `pkgsrc/`,
packages will be built into `pkg/`, and packaging keys will be
generated into `keys/`.

Alos trimmed the packages down to what I will build.