feat: remove db case-insensitivity on last name and uppercase in normalisation

activate_account/apps.py

activate_account/factories.py

activate_account/management/commands/init_mock_data.py

...grations/0008_alter_accountidentifier_id_and_last_name.py

activate_account/models.py

activate_account/tests/test_account.py

activate_account/tests/test_account_identifier.py

api/v1alpha/tests/test_reset_token.py

authentication/normalisation.py

authentication/tests/test_login_view.py

authentication/tests/test_normalisation.py

authentication/tests/test_token_request_serializer.py

data_manager_api/tests/test_serializers.py

data_manager_api/tests/test_views.py