v0.5.0-rc6

What's Changed

• Fix: increase shared memory size for PostgreSQL container by @odesenfans in #428
• Chore: update RabbitMQ to 3.11.15 by @odesenfans in #430
• Fix: avoid channel closed exception in message websocket by @odesenfans in #429

Full Changelog: v0.5.0-rc5...v0.5.0-rc6