If one of the cool things about wikibugs2 is that it uses asyncio, lets make more bits of it use asyncio! Using the new wikibugs2.rqueue.AsyncRedisQueue and it's self-healing connection to Redis is probably a more useful goal here than change for the sake of change.

This conversion would also be an opportunity to reexamine the decision from rTWBTd68d8f5de03b: wikibugs: get tag icon and color via Conduit API to lean into caching rather than bulk queries for project_info data.