Automatically cancel superseded CI build of PR

[microdev1]

GitHub Actions concurrency feature adds ability to cancel superseded CI builds.
With the current configuration, builds triggered on push to a branch aren't cancelled.

[jepler]

@microdev1 any idea what's going wrong with the espressif builds in some of these PRs? #5920 is failing in a similar way.

Successfully installed distlib-0.3.4 filelock-3.4.2 platformdirs-2.4.1 six-1.16.0 virtualenv-20.13.0
FileExistsError: [Errno 17] File exists: '/opt/hostedtoolcache/Python/3.10.2/x64/bin/python' -> '/home/runner/work/circuitpython/circuitpython/.idf_tools/python_env/idf4.4_py3.10_env/bin/python'
Traceback (most recent call last):
Creating a new Python environment in /home/runner/work/circuitpython/circuitpython/.idf_tools/python_env/idf4.4_py3.10_env
  File "/home/runner/work/circuitpython/circuitpython/ports/espressif/esp-idf/tools/idf_tools.py", line 1828, in <module>
Installing virtualenv
    main(sys.argv[1:])
  File "/home/runner/work/circuitpython/circuitpython/ports/espressif/esp-idf/tools/idf_tools.py", line 1824, in main
    action_func(args)
  File "/home/runner/work/circuitpython/circuitpython/ports/espressif/esp-idf/tools/idf_tools.py", line 1524, in action_install_python_env
    subprocess.check_call([sys.executable, '-m', 'virtualenv', '--seeder', 'pip', idf_python_env_path],
  File "/opt/hostedtoolcache/Python/3.10.2/x64/lib/python3.10/subprocess.py", line 369, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['/opt/hostedtoolcache/Python/3.10.2/x64/bin/python', '-m', 'virtualenv', '--seeder', 'pip', '/home/runner/work/circuitpython/circuitpython/.idf_tools/python_env/idf4.4_py3.10_env']' returned non-zero exit status 1.
Error: Process completed with exit code 1.

[microdev1]

@microdev1 any idea what's going wrong with the espressif builds in some of these PRs?

I don't know what's wrong but it seems to be fixed in #5923.

[dhalbert]

Thanks for following up so quickly on the issue! It will get exercised at some point.

[dhalbert]

Woot! Looks like this worked: https://github.com/adafruit/circuitpython/actions/runs/1759724741

I merged one PR, a translations PR started up, and then I merged another PR, which triggered the translations PR again, and the first one got canceled.