build: upgrade python version in all CI/CD workflows and implementation

.github/workflows/ci.yml

@@ -37,7 +37,7 @@ jobs:
       run: tox
 
     - name: Run coverage
-      if: matrix.python-version == '3.8' && matrix.toxenv == 'django42'
+      if: matrix.python-version == '3.11' && matrix.toxenv == 'django42'
       uses: codecov/codecov-action@v4
       with:
         flags: unittests

.github/workflows/pypi-publish.yml

@@ -15,7 +15,7 @@ jobs:
       - name: setup python
         uses: actions/setup-python@v5
         with:
-          python-version: 3.8
+          python-version: 3.11
 
       - name: Install pip
         run: pip install -r requirements/pip.txt

.readthedocs.yaml

@@ -8,7 +8,7 @@ version: 2
 build:
   os: "ubuntu-22.04"
   tools:
-    python: "3.8"
+    python: "3.11"
 
 # Build documentation in the docs/ directory with Sphinx
 sphinx:

openedx_events/event_bus/tests/test_loader.py

@@ -85,7 +85,6 @@ def test_missing_attribute(self):
             )
         assert loaded == {'def': 'ault'}
 
-    @pytest.mark.skipif(sys.version_info > (3, 9), reason="Python 3.8.x required")  # Temporary until 3.8 is dropped
     @override_settings(EB_LOAD_PATH='builtins.dict')
     def test_bad_args_for_callable(self):
         with assert_warnings([
@@ -99,7 +98,6 @@ def test_bad_args_for_callable(self):
             )
         assert loaded == {'def': 'ault'}
 
-    @pytest.mark.skipif(sys.version_info < (3, 9), reason="Python 3.11.x required")  # Temporary until 3.8 is dropped
     @override_settings(EB_LOAD_PATH='builtins.dict')
     def test_bad_args_for_callable(self):
         with assert_warnings([