Bump embassy dependencies on demo apps (#149)
* Bump embassy dependencies on demo apps
Bump embassy dependencie on demo apps to their latest. We're also
leaving ESP32 alone for now as it won't compile with latest
embassy-executor.
* esp32c3-serial: fix RxWorker instantiation
The constructor is `new_target()` fix it to get the demo to compile.
* Add esp32c3 to checkall.sh
Also build esp32c3 with checkall.sh otherwise regressions may be
missed.
* Add esp32c3 to build-demos-nostd workflow
Build esp32c3 in CI too.
authored by Felipe Balbi and committed by GitHub 575f0319 4efea2a0