Bump idna from 3.11 to 3.15 in /bin

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]

bin/requirements-lc.txt

@@ -2,7 +2,7 @@ beautifulsoup4==4.14.3
 certifi==2025.11.12
 charset-normalizer==3.4.4
 dnspython==2.8.0
-idna==3.11
+idna==3.15
 LinkChecker==10.6.0
 requests==2.33.0
 soupsieve==2.8

bin/requirements.txt

@@ -2,7 +2,7 @@ certifi==2026.4.22
 cffi==2.0.0
 charset-normalizer==3.4.7
 cryptography==47.0.0
-idna==3.13
+idna==3.15
 pycparser==3.0
 PyGithub==2.9.1
 PyJWT==2.12.1