chore(deps-dev): bump idna from 3.16 to 3.18 (#791)

Bumps [idna](https://github.com/kjd/idna) from 3.16 to 3.18.
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.md)
- [Commits](kjd/idna@v3.16...v3.18)

---
updated-dependencies:
- dependency-name: idna
  dependency-version: '3.18'
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

dev_requirements/requirements-docs.txt

@@ -22,7 +22,7 @@ docutils==0.21.2
     #   sphinx-rtd-theme
 efoli==2.3.0
     # via ahbicht (pyproject.toml)
-idna==3.16
+idna==3.18
     # via requests
 imagesize==2.0.0
     # via sphinx