build(deps): bump idna from 3.2 to 3.7 in /packages/p4pi-web

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>

packages/p4pi-web/requirements.txt

@@ -18,7 +18,7 @@ greenlet==1.1.2; python_version >= "2.7" and python_full_version < "3.0.0" or py
 gunicorn==20.1.0; python_version >= "3.5"
 h11==0.12.0; python_version >= "3.6" and python_full_version >= "3.6.1"
 hyperlink==21.0.0; python_full_version >= "3.6.7" and python_version >= "3.7"
-idna==3.2; python_full_version >= "3.6.7" and python_version >= "3.7"
+idna==3.7; python_full_version >= "3.6.7" and python_version >= "3.7"
 incremental==21.3.0; python_full_version >= "3.6.7" and python_version >= "3.6"
 psutil==5.9.0; (python_version >= "2.6" and python_full_version < "3.0.0") or (python_full_version >= "3.4.0")
 pyasn1-modules==0.2.8; python_full_version >= "3.6.7" and python_version >= "3.6"