Bump idna from 3.7 to 3.8 in /tools/triage

Bumps [idna](https://github.com/kjd/idna) from 3.7 to 3.8.
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.rst)
- [Commits](kjd/idna@v3.7...v3.8)

---
updated-dependencies:
- dependency-name: idna
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

tools/triage/requirements.txt

@@ -3,7 +3,7 @@ cffi==1.17.0
 charset-normalizer==3.3.2
 cryptography==43.0.0
 Deprecated==1.2.14
-idna==3.7
+idna==3.8
 pycparser==2.22
 PyGithub==2.4.0
 PyJWT==2.9.0