Bump idna from 3.6 to 3.7 (#738)

Bumps [idna](https://github.com/kjd/idna) from 3.6 to 3.7.
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.rst)
- [Commits](kjd/idna@v3.6...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>

Author: dependabot[bot]

requirements.txt

@@ -17,7 +17,7 @@ distlib==0.3.8
 docutils==0.19
 filelock==3.13.1
 identify==2.5.35
-idna==3.6
+idna==3.7
 imagesize==1.4.1
 Jinja2==3.1.3
 license-expression==30.2.0