Test

Add Myst (new tech stack) workflow #114

Job	Run time
Build static site with pixi	19s
Build static site with tox	50s
tox on windows-latest with Python 3.12	2m 1s
tox on macos-latest with Python 3.12	1m 13s
tox on ubuntu-latest with Python 3.12	1m 1s
tox on ubuntu-latest with Python 3.11 and oldest versioned dependencies	51s
pixi on ubuntu-latest with py312	21s
tox on ubuntu-latest with Python 3.13 and developer versioned dependencies	1m 14s
pixi on ubuntu-latest with py311	19s
pixi on windows-latest with py312	21s
pixi on windows-latest with py311	24s
pixi on macos-latest with py311	19s
pixi on macos-latest with py312	17s
Build jupyterlite site with pixi	19s
Build and execute static site with myst	47s
	10m 36s

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