build: remove version pin for Sphinx #5080
Merged
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In cf69cad the Sphinx version was pinned to "<4.4.0".
The issue at that time (a spurious warning) is described in:
sphinx-doc/sphinx#10112
The problematic check was removed in Sphinx v4.5:
https://www.sphinx-doc.org/en/master/changes.html#id334
The issue of spurious warnings was fixed in v5.x:
sphinx-doc/sphinx#10137
Technically it would be suitable to add negative version pin of Sphinx for "4.4".
But that version is quite outdated and at least Debian never shipped Sphinx v4.4 in a stable release.
This change fixes the current CI build failure, which is caused by an incompatibility of
sphinxcontrib-applehelp
with the older version of Sphinx.