Bump idna from 3.11 to 3.15

Bumps [idna](https://github.com/kjd/idna) from 3.11 to 3.15.
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.md)
- [Commits](kjd/idna@v3.11...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]

requirements.txt

@@ -8,7 +8,7 @@ colorama==0.4.6
 commoncode==32.4.2
 cryptography==46.0.5
 et-xmlfile==2.0.0
-idna==3.11
+idna==3.15
 importlib-metadata==4.8.3
 jaraco.functools==4.4.0
 Jinja2==3.1.6