server error with django-phonenumber-field 4.0.0

[Chrescht]

Issue Summary

Server error with ImportError: cannot import name 'force_text' from 'django.utils.encoding' and Django 4.2.6
In Django 4 force_text has been replaced by force_str

Steps to Reproduce

1. Install django-phonenumber-field 4.0.0 as required by django-oscar 3.2.2
   django-oscar 3.2.2 requires django-phonenumber-field<7.0.0,>=4.0.0, but you have django-phonenumber-field 7.2.0 which is incompatible
2. server error, log will show:
   File "/opt/django/env/lib/python3.10/site-packages/phonenumber_field/modelfields.py", line 4, in
   from django.utils.encoding import force_text
   ImportError: cannot import name 'force_text' from 'django.utils.encoding' (/opt/django/env/lib/python3.10/site-packages/django/utils/encoding.py)

Technical details

• Python version: 3.10.12
• Django version: 4.2.6
• Oscar version: 3.2.2

So far oscar runs fine with django-phonenumber-field 7.2.0.