…ess feedback\r\n\r\n* gen docs

…al API. \r\n\r\nThis API will allow workers to signal shutdown/restart, which Matching can use to unload the shutdown worker's sticky task queue. This will effectively remove the latency incurred from tasks being pushed to a sticky worker after that worker has already been shutdown.

* Bump Go version for CI builds to 1.21

* Bump to 1.22 in line with gRPC release policy