[ci] Dropped Python 3.9

Author: nemesifier

.github/workflows/ci.yml

@@ -27,7 +27,6 @@ jobs:
       fail-fast: false
       matrix:
         python-version:
-          - "3.9"
           - "3.10"
           - "3.11"
           - "3.12"
@@ -36,15 +35,6 @@ jobs:
           - django~=4.2.0
           - django~=5.1.0
           - django~=5.2.0
-        exclude:
-          # Django 5.1+ requires Python >=3.10
-          - python-version: "3.9"
-            django-version: django~=5.1.0
-          - python-version: "3.9"
-            django-version: django~=5.2.0
-          # Python 3.13 supported only in Django >=5.1.3
-          - python-version: "3.13"
-            django-version: django~=4.2.0
 
     steps:
       - uses: actions/checkout@v5