community/py3-asyncpg: upgrade to 0.30.0

• Ref https://github.com/MagicStack/asyncpg/releases/tag/v0.30.0
• Add py3-distro to checkdepends

added 4 commits

• 8bd46a7a...bba165d6 - 3 commits from branch alpine:master
• 52bbdbb8 - community/py3-asyncpg: upgrade to 0.30.0

Compare with previous version

merged