Merge pull request #4160 from django-oscar/dependabot/pip/django-debug-toolbar-gte-2.2-and-lt-4.3

Update django-debug-toolbar requirement from <4.2,>=2.2 to >=2.2,<4.3

requirements.txt

 # These requirements are only necessary when developing on Oscar.
 
 # development
-django-debug-toolbar>=2.2,<4.2
+django-debug-toolbar>=2.2,<4.3
 django-extensions>=2.2,<3.3
 psycopg2-binary>=2.8,<2.10