feat: Upgrade to Python 3.12 (#4675)

Co-authored-by: Hayden <64056131+hay-kot@users.noreply.github.com>

mealie/repos/repository_generic.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 import random
 from collections.abc import Iterable
-from datetime import datetime, timezone
+from datetime import UTC, datetime
 from math import ceil
 from typing import Any, Generic, TypeVar
 
@@ -70,7 +70,7 @@ class RepositoryGeneric(Generic[Schema, Model]):
         return self._household_id
 
     def _random_seed(self) -> str:
-        return str(datetime.now(tz=timezone.utc))
+        return str(datetime.now(tz=UTC))
 
     def _log_exception(self, e: Exception) -> None:
         self.logger.error(f"Error processing query for Repo model={self.model.__name__} schema={self.schema.__name__}")

mealie/repos/repository_meals.py

@@ -1,4 +1,4 @@
-from datetime import datetime, timezone
+from datetime import UTC, datetime
 
 from sqlalchemy import select
 
@@ -13,7 +13,7 @@ class RepositoryMeals(HouseholdRepositoryGeneric[ReadPlanEntry, GroupMealPlan]):
         if not self.household_id:
             raise Exception("household_id not set")
 
-        today = datetime.now(tz=timezone.utc).date()
+        today = datetime.now(tz=UTC).date()
         stmt = select(GroupMealPlan).filter(
             GroupMealPlan.date == today, GroupMealPlan.household_id == self.household_id
         )

mealie/repos/repository_recipes.py

@@ -1,7 +1,7 @@
 import re as re
 from collections.abc import Sequence
 from random import randint
-from typing import cast
+from typing import Self, cast
 from uuid import UUID
 
 import sqlalchemy as sa
@@ -10,7 +10,6 @@ from pydantic import UUID4
 from slugify import slugify
 from sqlalchemy import orm
 from sqlalchemy.exc import IntegrityError
-from typing_extensions import Self
 
 from mealie.db.models.household.household import Household
 from mealie.db.models.recipe.category import Category