Bump idna from 3.2 to 3.7 in /timeweb

Bumps [idna](https://github.com/kjd/idna) from 3.2 to 3.7.
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.rst)
- [Commits](kjd/idna@v3.2...v3.7)

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

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

timeweb/requirements.txt

@@ -38,7 +38,7 @@ gunicorn==20.1.0
 html2text==2020.1.16
 html5lib==1.1
 httplib2==0.19.1
-idna==3.2
+idna==3.7
 minify_html==0.10.7
 oauthlib==3.2.2
 packaging==21.0