Test

Add Myst (new tech stack) workflow #32

Job	Run time
Build static site with pixi	30s
Build and execute static site with myst	40s
Build static site with tox	51s
pixi on ubuntu-latest with py311	22s
tox on ubuntu-latest with Python 3.12	40s
pixi on ubuntu-latest with py312	24s
tox on macos-latest with Python 3.12	46s
pixi on macos-latest with py311	30s
tox on windows-latest with Python 3.12	1m 51s
pixi on macos-latest with py312	26s
tox on ubuntu-latest with Python 3.11 and oldest versioned dependencies	44s
pixi on windows-latest with py311	1m 12s
tox on ubuntu-latest with Python 3.13 and developer versioned dependencies	1m 10s
pixi on windows-latest with py312	1m 19s
	11m 25s

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