~dricottone/apkbuilds

ref: 6b6e36a6c9fa6860fd367df75138444f9e827cc9 apkbuilds/src/py3-scmsrht d---------
Updating to alpine v3.20
Alpine 3.19

Updates to many packages, including several which can be dropped from
vendoring.

Some updates top the Makefile recipes.

Many tips for future me in the README.