builds.sr.ht: upgrade to 0.66.4
py3-srht: upgrade to 0.67.0
py3-arrow: remove; now in alpine community
py3-weasyprint: python 3.9 fixes
py3-vine: "fix" test suite
py3-pgpy: add wheel dependency
py3-colour: add missing dependency
py3-cairocffi: remove; now in alpine community
py3-cairosvg: remove; now in alpine community
py3-tinycss2: remove; now in alpine community
py3-cssselect2: remove; now in alpine community
py3-celery: remove obsolete dependency
py3-cairocffi: new dependency
builds.sr.ht: new dependency
py3-ansi2html: fix dependencies
py3-billiard: "upgrade" to 3.6.4.0
py3-amqp: "upgrade" to 5.0.6
py3-humanize: upgrade to 3.3.0