Breaking: drop support for api versions < 9 (#12284)

src/paperless/settings/__init__.py

@@ -155,7 +155,7 @@ REST_FRAMEWORK = {
     "DEFAULT_VERSION": "10",  # match src-ui/src/environments/environment.prod.ts
     # Make sure these are ordered and that the most recent version appears
     # last. See api.md#api-versioning when adding new versions.
-    "ALLOWED_VERSIONS": ["2", "3", "4", "5", "6", "7", "8", "9", "10"],
+    "ALLOWED_VERSIONS": ["9", "10"],
     # DRF Spectacular default schema
     "DEFAULT_SCHEMA_CLASS": "drf_spectacular.openapi.AutoSchema",
 }