[deps] Update phonenumbers requirement from ~=8.13.0 to ~=8.13.42

Updates the requirements on [phonenumbers](https://github.com/daviddrysdale/python-phonenumbers) to permit the latest version.
- [Commits](daviddrysdale/python-phonenumbers@v8.13.0...v8.13.42)

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

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -2,7 +2,7 @@ django-organizations~=2.1.0
 django-extensions~=3.2.3
 django-allauth~=0.54.0
 django-phonenumber-field~=8.0.0
-phonenumbers~=8.13.0
+phonenumbers~=8.13.42
 openwisp-utils[rest,celery] @ https://github.com/openwisp/openwisp-utils/tarball/master
 packaging
 django-sesame~=2.4.0