Drop support for Python 3.9

.github/workflows/tests.yml

@@ -23,13 +23,13 @@ jobs:
     name: Tests
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11"]
+        python-version: ["3.10", "3.11", "3.13"]
         database: [sqlite, postgres]
         exclude:
-          - database: sqlite
-            python-version: "3.9"
           - database: sqlite
             python-version: "3.10"
+          - database: sqlite
+            python-version: "3.11"
     services:
       postgres:
         image: postgres:15

pyproject.toml

@@ -3,7 +3,7 @@ name = "pretix"
 dynamic = ["version"]
 description = "Reinventing presales, one ticket at a time"
 readme = "README.rst"
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 license = {file = "LICENSE"}
 keywords = ["tickets", "web", "shop", "ecommerce"]
 authors = [