fix: support for sphinx v8.1.0 #1705

Job	Run time
check_conventions (ruff_format ruff_lint check_yaml check_json check_toml check_eof check_trailin...	54s
check_conventions (mypy, 3.9)	28s
check_conventions (mypy, 3.10)	36s
check_conventions (mypy, 3.11)	27s
check_conventions (mypy, 3.12)	33s
build (ubuntu-latest, 3.x, 16.x)	2m 36s
build (windows-latest, 3.x, 16.x)	6m 33s
build (macos-latest, 3.x, 16.x)	2m 42s
test (ubuntu-latest, 3.9, 16.x)	4m 4s
compare-wheels	15s
test (ubuntu-latest, 3.10, 16.x)	4m 16s
test (ubuntu-latest, 3.11, 16.x)	4m 48s
test (ubuntu-latest, 3.12, 16.x)	5m 44s
test (windows-latest, 3.9, 16.x)	8m 41s
test (windows-latest, 3.10, 16.x)	9m 48s
test (windows-latest, 3.11, 16.x)	8m 3s
test (windows-latest, 3.12, 16.x)	12m 38s
test (macos-latest, 3.9, 16.x)	5m 3s
test (macos-latest, 3.10, 16.x)	4m 3s
test (macos-latest, 3.11, 16.x)	4m 6s
test (macos-latest, 3.12, 16.x)	4m 25s
coverage-report	23s
python-publish-package	0s
	1h 31m 6s

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