3.10 & 3.9 PRs fail on documentation builds with:

Error: This request has been automatically failed because it uses a deprecated version of actions/upload-artifact: v3. Learn more: https://github.blog/changelog/2024-04-16-deprecation-notice-v3-of-the-artifact-actions/

For example: https://github.com/python/cpython/actions/runs/13077929192/job/36494533879?pr=129529

Linked PRs

• [3.10] gh-129641: Docs GHA build: use upload-artifact@v4 & Python 3.12 #129642
• [3.9] gh-129641: Docs GHA build: use upload-artifact@v4 (GH-129642) #130114