[UPDATE] Update ipython requirement

Updates the requirements on [ipython](https://github.com/ipython/ipython) to permit the latest version.
- [Release notes](https://github.com/ipython/ipython/releases)
- [Commits](https://github.com/ipython/ipython/compare/9.14.1...9.15.0)

---
updated-dependencies:
- dependency-name: ipython
  dependency-version: 9.15.0
  dependency-type: direct:development
...

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

@@ -64,7 +64,7 @@ prod = [
 ]
 dev = [
     "django-debug-toolbar>=7.0.0,<8",
-    "ipython>=9.14.1,<10.0.0",
+    "ipython>=9.15.0,<10.0.0",
     "pre-commit>=4.6.0,<5.0.0",
     "ruff>=0.15.19,<1.0.0",
     "djhtml>=3.0.11,<4.0.0",