Bump idna from 3.10 to 3.15 in /notebook_python

Bumps [idna](https://github.com/kjd/idna) from 3.10 to 3.15.
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.md)
- [Commits](kjd/idna@v3.10...v3.15)

---
updated-dependencies:
- dependency-name: idna
  dependency-version: '3.15'
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

notebook_python/requirements_notebook.txt

@@ -22,7 +22,7 @@ fqdn==1.5.1
 h11==0.16.0
 httpcore==1.0.9
 httpx==0.28.1
-idna==3.10
+idna==3.15
 ipykernel==6.30.1
 ipython==9.6.0
 ipython_pygments_lexers==1.1.1