chore: add [async] extra to match repo-review 1.0 #2192

Job	Run time
change-detection / Identify source changes	9s
rr-tests / Run cog on README	13s
rr-tests / Action	17s
rr-tests / Run pylint	16s
rr-tests / Check Python 3.10 on macos-15-intel	1m 9s
rr-tests / Check Python 3.10 on ubuntu-latest	30s
rr-tests / Check Python 3.14 on macos-latest	29s
rr-tests / Check Python 3.14 on windows-latest	52s
rr-tests / Check Python 3.12 on windows-latest	53s
rr-tests / Check Python 3.10 on macos-latest	56s
rr-tests / Check Python 3.12 on macos-15-intel	56s
rr-tests / Check Python 3.14 on ubuntu-latest	35s
rr-tests / Check Python 3.12 on macos-latest	29s
rr-tests / Check Python 3.10 on windows-latest	49s
rr-tests / Check Python 3.14 on macos-15-intel	1m 19s
rr-tests / Check Python 3.12 on ubuntu-latest	31s
cookie	-1s
pass	3s
	10m 25s

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