chore(deps): bump idna (#11439)

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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dataflow/flex-templates/pipeline_with_dependencies/requirements.txt

@@ -182,7 +182,7 @@ httplib2==0.22.0
     #   google-apitools
     #   google-auth-httplib2
     #   oauth2client
-idna==3.6
+idna==3.7
     # via requests
 js2py==0.74
     # via apache-beam