build(deps): bump the pip group across 1 directory with 2 updates

Bumps the pip group with 2 updates in the /Doc directory: [idna](https://github.com/kjd/idna) and [jinja2](https://github.com/pallets/jinja).


Updates `idna` from 3.4 to 3.7
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.rst)
- [Commits](kjd/idna@v3.4...v3.7)

Updates `jinja2` from 3.1.2 to 3.1.3
- [Release notes](https://github.com/pallets/jinja/releases)
- [Changelog](https://github.com/pallets/jinja/blob/main/CHANGES.rst)
- [Commits](pallets/jinja@3.1.2...3.1.3)

---
updated-dependencies:
- dependency-name: idna
  dependency-type: direct:production
  dependency-group: pip
- dependency-name: jinja2
  dependency-type: direct:production
  dependency-group: pip
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Diff for: Doc/requirements-oldest-sphinx.txt

@@ -17,9 +17,9 @@ Babel==2.13.0
 certifi==2023.7.22
 charset-normalizer==3.3.0
 docutils==0.17.1
-idna==3.4
+idna==3.7
 imagesize==1.4.1
-Jinja2==3.1.2
+Jinja2==3.1.3
 MarkupSafe==2.1.3
 packaging==23.2
 Pygments==2.16.1