Test

Enable jupyterlite pixi tasks #77

Job	Run time
tox on ubuntu-latest with Python 3.12	52s
pixi on ubuntu-latest with py311	31s
Build static site with pixi	28s
tox on macos-latest with Python 3.12	39s
Build jupyterlite site with pixi	49s
pixi on ubuntu-latest with py312	28s
tox on windows-latest with Python 3.12	1m 34s
pixi on macos-latest with py311	1m 5s
tox on ubuntu-latest with Python 3.11 and oldest versioned dependencies	37s
Build static site with tox	41s
pixi on macos-latest with py312	41s
tox on ubuntu-latest with Python 3.13 and developer versioned dependencies	1m 12s
pixi on windows-latest with py311	2m 22s
pixi on windows-latest with py312	2m 11s
	14m 10s

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