[UPDATE] Update redis requirement from <9.0.0,>=6.4.0 to >=8.0.1,<9.0.0

Updates the requirements on [redis](https://github.com/redis/redis-py) to permit the latest version.
- [Release notes](https://github.com/redis/redis-py/releases)
- [Changelog](https://github.com/redis/redis-py/blob/master/CHANGES)
- [Commits](https://github.com/redis/redis-py/compare/v6.4.0...v8.0.1)

---
updated-dependencies:
- dependency-name: redis
  dependency-version: 8.0.1
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

counter/tests/test_counter.py

@@ -886,28 +886,6 @@ class TestBarmanConnection(TestCase):
         )
         assert response.status_code == 403
 
-    def test_logout_then_login(self):
-        """Test that the login is successful if it is after a previous logout.
-
-        This is a regression test for #1440
-        """
-        self.client.post(  # login
-            self.login_url, {"username": self.barman.username, "password": "plop"}
-        )
-        self.client.post(  # logout
-            reverse("counter:logout", kwargs={"counter_id": self.counter.id}),
-            data={"user_id": self.barman.id},
-        )
-        response = self.client.post(  # and re-login
-            self.login_url, {"username": self.barman.username, "password": "plop"}
-        )
-        assert response.status_code == 200
-        assert response.headers["HX-Redirect"] == self.detail_url
-        response = self.client.get(
-            self.detail_url, {"username": self.barman.username, "password": "plop"}
-        )
-        assert self.barman in response.wsgi_request.barmen
-
 
 @pytest.mark.django_db
 def test_barman_timeout(client: Client):

counter/views/home.py

@@ -61,7 +61,6 @@ class CounterLoginFragment(FragmentMixin, SingleObjectMixin, FormView):
         user = form.get_user()
         perm = self.object.permanencies.create(user=user, start=timezone.now())
         self.request.session.setdefault(SESSION_PERMANENCES_KEY, []).append(perm.id)
-        self.request.session.modified = True
         self.success_url = reverse(
             "counter:details", kwargs={"counter_id": self.object.id}
         )

pyproject.toml

@@ -44,7 +44,7 @@ dependencies = [
     "django-honeypot>=1.3.0,<2",
     "pydantic-extra-types>=2.11.1,<3.0.0",
     "ical>=12.0.0,<14.0.0",
-    "redis[hiredis]>=6.4.0,<9.0.0",
+    "redis[hiredis]>=8.0.1,<9.0.0",
     "environs[django]>=15.0.1,<16",
     "requests>=2.34.2,<3.0.0",
     "honcho>=2.0.0",