build(deps): bump idna in /get-started/azure-auth/python

Bumps [idna](https://github.com/kjd/idna) from 3.13 to 3.15.
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.md)
- [Commits](kjd/idna@v3.13...v3.15)

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

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

Author: dependabot[bot]

get-started/azure-auth/python/requirements.txt

@@ -50,7 +50,7 @@ httpx[http2]==0.28.1
     # via microsoft-kiota-http
 hyperframe==6.1.0
     # via h2
-idna==3.13
+idna==3.15
     # via
     #   anyio
     #   httpx