⬆️ Support Sphinx v9 #1948

Job	Run time
Check myst-docutils install (0.21)	15s
Check myst-docutils install (0.20)	13s
pytest: py3.14, sphinx>=8,<9, on ubuntu-latest	28s
pytest: py3.11, sphinx>=9,<10, on ubuntu-latest	35s
pytest: py3.12, sphinx>=9,<10, on ubuntu-latest	33s
pytest: py3.13, sphinx>=8,<9, on ubuntu-latest	37s
pytest: py3.11, sphinx>=8,<9, on windows-latest	1m 21s
pytest: py3.12, sphinx>=8,<9, on ubuntu-latest	36s
pre-commit	14s
pytest: py3.13, sphinx>=9,<10, on ubuntu-latest	35s
pytest: py3.11, sphinx>=8,<9, on ubuntu-latest	34s
pytest: py3.14, sphinx>=9,<10, on ubuntu-latest	29s
pytest: py3.14, sphinx>=9,<10, on windows-latest	1m 3s
check	3s
Publish myst-parser to PyPi	-1s
Publish myst-docutils to PyPi	0s
	7m 35s

Provide feedback