Bump idna from 3.4 to 3.7

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
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -46,7 +46,7 @@ glyphsLib==6.2.2
 glyphtools==0.8.0
 h11==0.14.0
 hyperglot==0.4.5
-idna==3.4
+idna==3.7
 Jinja2==3.1.2
 kurbopy==0.9.0
 lxml==4.9.2