[Squad-dev] squad 1.21 release

Hi,

This 1.21 release changes the lava backend XML-RPC transport layer to use requests, also including a pre-defined timeout. The release adds the Celery plugin for Sentry users.

Complete list of changes going in:

* ci: add tests for LAVA backend call timeouts * ci: lava: change XML-RPC transport to use requests * frontend: build: include test jobs with no status in Test jobs tab * settings: add CeleryIntegration to sentry

Ch{eers,arles}