REL scikit-learn 1.3.2

[glemaitre]

• update news and what's new date in release branch
• update news and what's new date and sklearn dev0 version in main branch
• check that the wheels for the release can be built successfully
• merge the PR with [cd build] commit message to upload wheels to the staging repo
• upload the wheels and source tarball to https://test.pypi.org
• create tag on the main github repo
• confirm bot detected at
  https://github.com/conda-forge/scikit-learn-feedstock and wait for merge
• upload the wheels and source tarball to PyPI
• https://github.com/scikit-learn/scikit-learn/releases publish (except for RC)
• announce on mailing list and on Twitter, and LinkedIn
• update symlink for stable in
  https://github.com/scikit-learn/scikit-learn.github.io (only major/minor)
• update SECURITY.md in main branch (except for RC)

TODO:

remaining PRs to backport in this PR:

• DOC move somes fixes from 1.4 to 1.3.2 #27602
• DOC add version 1.3.2 into landing page #27604
• MAINT remove prerelease flag for Python 3.12 #27605
• TST change random seed to make graphical lasso test pass #27616

[github-actions]

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