chore(deps): bump idna (#14134)

Bumps the py-minor group in /.github/workflows/dependencies with 1 update: [idna](https://github.com/kjd/idna).


Updates `idna` from 3.19 to 3.20
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.md)
- [Commits](https://github.com/kjd/idna/compare/v3.19...v3.20)

---
updated-dependencies:
- dependency-name: idna
  dependency-version: '3.20'
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: py-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/dependencies/requirements.txt

@@ -1,6 +1,6 @@
 certifi==2026.7.22
 charset-normalizer==3.5.1
-idna==3.19
+idna==3.20
 PyYAML==6.0.3
 requests==2.34.2
 semver==3.1.0