chore: Split long object signatures in separate lines

[MortGron]

Description

In the docs long object signatures are very hard to read. Splitting the arguments of long function signatures on separate lines will greatly help on readablility.

Example of current look:

Example of new look:

Checklist:

• Tests added/updated.
• Documentation updated. Documentation is generated from docstrings - these must be updated according to your change.
  If a new method has been added it should be referenced in cognite.rst in order to generate docs based on its docstring.
• The PR title follows the Conventional Commit spec.

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[MortGron]

/gemini review

[gemini-code-assist]

Code Review

This pull request improves the readability of long object signatures in the documentation by upgrading Sphinx and configuring it to wrap long lines. The changes, including the new CSS for styling and the updated dependencies, are well-implemented and effectively address the issue. The code is clean and I have no concerns.

[haakonvt]

That is a lot better (!!)