`Doc/requirements-oldest-sphinx.txt` needs to be regenerated

[Eclips4]

Bug report

Bug description:

Due to https://github.com/python/cpython/security/dependabot/12 and https://github.com/python/cpython/security/dependabot/11, the dependency file must be regenerated (it's fine if those links go nowhere, only triagers and core devs see it). CPython Doc is not vulnerable to these two CVE's, but I guess it's ok to bump Jinja's minor version to "silence" these dependabot alerts.

New contributors are welcome!
You need to:

• clone CPython repository and cd to the Doc directory
• create && activate venv
• pip install "Sphinx~=7.2.6"
• Output of pip freeze should be pasted into Doc/requirements-oldest-sphinx (from line 15 to the end)

Do not write the NEWS entry, triage/core dev will aply skip-news label.

CPython versions tested on:

CPython main branch

Operating systems tested on:

No response

Linked PRs

• gh-128227: Regenerate requirements file #128228
• [3.13] gh-128227: Regenerate Doc/requirements-oldest-sphinx.txt (GH-128228) #128229
• [3.12] gh-128227: Regenerate Doc/requirements-oldest-sphinx.txt (GH-128228) #128230

[wrongnull]

I'm going to send a pr
Thanks for the opportunity @Eclips4

[Eclips4]

Thank you!