Bump idna from 3.4 to 3.7 (#2296)

Bumps [idna](https://github.com/kjd/idna) from 3.4 to 3.7.
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.rst)
- [Commits](kjd/idna@v3.4...v3.7)

---
updated-dependencies:
- dependency-name: idna
  dependency-type: direct:production
...

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

requirements.txt

@@ -6,7 +6,7 @@ colorama==0.4.6
 ghp-import==2.1.0
 gitdb==4.0.10
 GitPython==3.1.41
-idna==3.4
+idna==3.7
 Jinja2==3.1.3
 Markdown==3.3.7
 MarkupSafe==2.1.2