5th attempt: distinguish manylinux vs musllinux

Roll back actions/upload-artifact@v4 to actions/upload-artifact@v3

Seems to be problematic:
actions/upload-artifact#480
actions/upload-artifact#478

Merge pull request #164 from rougier/update-deps

Update bundled dependencies

Merge pull request #148 from rougier/update-bundled-ft-and-hb

Update bundled dependencies and tooling

Merge pull request #125 from rougier/upgrade-fthb

Upgrade FreeType and HarfBuzz

Merge pull request #125 from rougier/upgrade-fthb

Upgrade FreeType and HarfBuzz

Merge pull request #108 from madig/update-to-ft-2.10.0

FreeType 2.10, HarfBuzz 2.3.1: Update libs, add Python 3.7 to build list

Merge pull request #110 from madig/ci-no-py37

Remove Python 3.7 from CI build

Merge pull request #97 from madig/fix-appveyor-pt5

AppVeyor: cd to main directory for package upload.

Merge pull request #96 from madig/fix-appveyor-pt4

Fix AppVeyor deploy, take four.