chore!: drop long-unsupported py3.7 py3.8 django versions (#179)

Python 3.7 hasn't been supported in ages, and it's causing errors on CI
actions so let's just drop it.

It appears that [dropping Python 3.7 is desired
anyway](https://github.com/crccheck/django-object-actions/blob/master/CHANGELOG.md#v430-2024-09-10)!

Author: mgrdcm

.github/workflows/ci.yml

@@ -15,12 +15,11 @@ jobs:
         uses: fabiocaccamo/create-matrix-action@v3
         with:
           matrix: |
-            python-version {3.7}, django-version {2.0,2.1,2.2,3.0,3.1}
-            python-version {3.8}, django-version {2.2,3.0,3.1,3.2,4.0,4.1,4.2}
-            python-version {3.9}, django-version {2.2,3.0,3.1,3.2,4.0,4.1,4.2}
-            python-version {3.10}, django-version {3.2,4.0,4.1,4.2,5.0,5.1}
-            python-version {3.11}, django-version {4.0,4.1,4.2,5.0,5.1}
+            python-version {3.9}, django-version {4.2}
+            python-version {3.10}, django-version {4.2,5.0,5.1}
+            python-version {3.11}, django-version {4.2,5.0,5.1}
             python-version {3.12}, django-version {4.2,5.0,5.1}
+            python-version {3.13}, django-version {5.1}
     outputs:
       matrix: ${{ steps.create_matrix.outputs.matrix }}
 

Dockerfile

@@ -1,5 +1,5 @@
 # TODO upgrade once old Django versions are dropped
-FROM python:3.6-alpine3.7
+FROM python:3.9-alpine
 
 RUN apk add --no-cache make
 

django_object_actions/tests/test_utils.py

@@ -19,7 +19,7 @@ def setUp(self):
         )
 
     @mock.patch(
-        "django_object_actions.utils.BaseDjangoObjectActions" ".admin_site", create=True
+        "django_object_actions.utils.BaseDjangoObjectActions.admin_site", create=True
     )
     def test_get_action_urls_trivial_case(self, mock_site):
         urls = self.instance._get_action_urls()