* Disable builds for 3.10.0a4, and enable a nightly 3.10-dev build

* Fix job name

* Remove deadsnakes job for now

* Add deadsnakes jobs

* There's no deadsnakes 2.7

* Add 3.10 to versions to be discovered by legacy FindPython, and fix debug input to deadsnakes/action

* Try out branch with fix

* Update to deadsnakes/action@v2.1.1