Use Python 3.12 as lowest supported Python version

.github/workflows/main.yml

@@ -41,17 +41,27 @@ jobs:
       - name: ${{ matrix.task }}
         run: ${{ matrix.task }}
 
-  lowest_environment_checks:
+  lowest_supported_python:
     strategy:
       matrix:
         include:
           - dependencies: python3-into-dbus-python
             task: PYTHONPATH=./src make -f Makefile test
-          - dependencies: python-setuptools python3-into-dbus-python
-            task: make legacy-package
     runs-on: ubuntu-latest
-    container: fedora:35  # LOWEST DEVELOPMENT ENVIRONMENT
+    container: fedora:41  # CURRENT DEVELOPMENT ENVIRONMENT
     steps:
+      - name: Install python3.12
+        run: >
+          dnf install -y
+          alternatives
+          python3.12
+      - name: Set python3 to python3.12
+        run: >
+          alternatives
+          --install /usr/bin/python3
+          python3
+          /usr/bin/python3.12
+          10
       - name: Display Python version
         run: python3 --version
       - uses: actions/checkout@v4

Makefile

@@ -40,8 +40,3 @@ yamllint:
 .PHONY: package
 package:
 	(umask 0022; python -m build; python -m twine check --strict ./dist/*)
-
-.PHONY: legacy-package
-legacy-package:
-	python3 setup.py build
-	python3 setup.py install