ci: Remove outdated Python 3.8 workflow

Author: mrbazzan

.github/workflows/codecov.yml

@@ -19,7 +19,6 @@ jobs:
       fail-fast: false
       matrix:
         python-version:
-        - 3.8
         - 3.9
         - '3.10'
         - '3.11'

tests/requirements/compile.py

@@ -19,48 +19,6 @@
     ] + sys.argv[1:]
     # mysqlclient requirements found on each version's "Databases" documentation page:
     # https://docs.djangoproject.com/en/3.0/ref/databases/#mysql-db-api-drivers
-    subprocess.run(
-        [
-            "python3.8",
-            *common_args,
-            "-P",
-            "Django>=3.2a1,<3.3",
-            "-P",
-            "django-cms>=3.8,<3.9",
-            "-o",
-            "py38-django32-cms38.txt",
-        ],
-        check=True,
-        capture_output=True,
-    )
-    subprocess.run(
-        [
-            "python3.8",
-            *common_args,
-            "-P",
-            "Django>=3.2a1,<3.3",
-            "-P",
-            "django-cms>=3.9,<3.10",
-            "-o",
-            "py38-django32-cms39.txt",
-        ],
-        check=True,
-        capture_output=True,
-    )
-    subprocess.run(
-        [
-            "python3.8",
-            *common_args,
-            "-P",
-            "Django>=3.2a1,<3.3",
-            "-P",
-            "django-cms>=3.10,<3.11",
-            "-o",
-            "py38-django32-cms310.txt",
-        ],
-        check=True,
-        capture_output=True,
-    )
     subprocess.run(
         [
             "python3.9",