Update prefix-dev/setup-pixi action to v0.9.4 #167

Job	Run time
Build source distribution	22s
Build wheels on macos-13 (x86_64)	1s
Build wheels on ubuntu-latest (x86_64)	7m 10s
Build wheels on macos-latest (arm64)	7m 28s
Show artifacts	0s
Upload release to PyPI	-1s
	15m 0s

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