Update sphinx package requirements on main

[ClaudiaComito]

Due Diligence

• General:
  • base branch must be main for new features, latest release branch (e.g. release/1.3.x) for bug fixes
  • title of the PR is suitable to appear in the Release Notes
• Implementation:
  • unit tests: all split configurations tested
  • unit tests: multiple dtypes tested
  • documentation updated where needed

Description

Issue/s resolved: #

Changes proposed:

• Merging Merge sphinx update #1239 to main as well

Type of change

Documentation update

Memory requirements

NA

Performance

NA

Does this change modify the behaviour of other functions? If so, which?

no

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Legend

[github-actions]

Thank you for the PR!

[codecov]

Codecov Report

Merging #1245 (cfa1c47) into main (5beb254) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1245   +/-   ##
=======================================
  Coverage   91.75%   91.75%           
=======================================
  Files          77       77           
  Lines       11080    11080           
=======================================
  Hits        10166    10166           
  Misses        914      914           

Flag	Coverage Δ
unit	91.75% <ø> (ø)

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[mrfh92]

As fas as I can judge, the changes look fine.
Thanks for the work 👍