Update docs for ssl param in client

[aitor-gamarra]

What do these changes do?

Improve the docs for the ssl params.

In the current docs, the following is written:

ssl –
SSL validation mode. None for default SSL check

However, None is deprecated since #8048 and the default is actually True as shown in the code:

ssl: Union[SSLContext, bool, Fingerprint] = True

Are there changes in behavior for the user?

Just docs.

Is it a substantial burden for the maintainers to support this?

No.

Related issue number

No.

Checklist

• I think the code is well written
• Unit tests for the changes exist
• Documentation reflects the changes
• If you provide code modification, please add yourself to CONTRIBUTORS.txt
  • The format is <Name> <Surname>.
  • Please keep alphabetical order, the file is sorted by names.
• Add a new news fragment into the CHANGES/ folder

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.64%. Comparing base (2eccb8b) to head (f1d133c).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #8403   +/-   ##
=======================================
  Coverage   97.64%   97.64%           
=======================================
  Files         107      107           
  Lines       33067    33067           
  Branches     3885     3885           
=======================================
  Hits        32288    32288           
  Misses        562      562           
  Partials      217      217           

Flag	Coverage Δ
CI-GHA	97.55% <ø> (ø)
OS-Linux	97.22% <ø> (ø)
OS-Windows	95.64% <ø> (ø)
OS-macOS	96.79% <ø> (-0.09%)	⬇️
Py-3.10.11	97.03% <ø> (-0.01%)	⬇️
Py-3.10.14	96.98% <ø> (ø)
Py-3.11.9	97.20% <ø> (ø)
Py-3.12.3	97.30% <ø> (-0.03%)	⬇️
Py-3.8.10	95.41% <ø> (ø)
Py-3.8.18	96.67% <ø> (-0.21%)	⬇️
Py-3.9.13	95.46% <ø> (-1.56%)	⬇️
Py-3.9.19	96.97% <ø> (ø)
Py-pypy7.3.15	96.54% <ø> (+<0.01%)	⬆️
VM-macos	96.79% <ø> (-0.09%)	⬇️
VM-ubuntu	97.22% <ø> (ø)
VM-windows	95.64% <ø> (ø)

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[patchback]

Backport to 3.10: 💚 backport PR created

✅ Backport PR branch: patchback/backports/3.10/06033c231c3ff28bd1a2046fe23029f4cacf1e44/pr-8403

Backported as #8404

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