Update `get_available_gpus` and `set_gpus` #66

Job	Run time
install_with_pip (ubuntu-latest, 3.8)	8s
install_with_pip (ubuntu-latest, 3.9)	17s
install_with_pip (ubuntu-latest, 3.10)	14s
use_as_local_module (ubuntu-latest, 3.8)	9s
install_with_pip (ubuntu-latest, 3.11)	12s
use_as_local_module (ubuntu-latest, 3.9)	7s
install_with_pip (macos-latest, 3.8)	33s
use_as_local_module (ubuntu-latest, 3.10)	8s
install_with_pip (macos-latest, 3.9)	9s
use_as_local_module (ubuntu-latest, 3.11)	11s
install_with_pip (macos-latest, 3.10)	10s
use_as_local_module (macos-latest, 3.8)	41s
install_with_pip (macos-latest, 3.11)	8s
use_as_local_module (macos-latest, 3.9)	12s
install_with_pip (windows-latest, 3.8)	19s
use_as_local_module (macos-latest, 3.10)	10s
install_with_pip (windows-latest, 3.9)	28s
use_as_local_module (macos-latest, 3.11)	9s
install_with_pip (windows-latest, 3.10)	20s
use_as_local_module (windows-latest, 3.8)	26s
install_with_pip (windows-latest, 3.11)	37s
use_as_local_module (windows-latest, 3.9)	24s
use_as_local_module (windows-latest, 3.10)	26s
use_as_local_module (windows-latest, 3.11)	37s
	7m 15s

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