chore: Python 3.12 is the floor (NAPALM/driver-standard#6)

netOrk runs every driver in its own containers on Python 3.12, so 3.10
and 3.11 are no longer supported or tested. requires-python, mypy and
ruff move to 3.12, along with what ruff's pyupgrade rules then rewrite.

napalm_device_types/_matching.py

@@ -8,12 +8,9 @@ name a single entry, and guessing would overwrite one the caller never meant.
 from __future__ import annotations
 
 from collections.abc import Callable, Iterable
-from typing import TypeVar
-
-T = TypeVar("T")
 
 
-def index_live(entries: Iterable[T], key: Callable[[T], str]) -> tuple[dict[str, T], set[str]]:
+def index_live[T](entries: Iterable[T], key: Callable[[T], str]) -> tuple[dict[str, T], set[str]]:
     """Live entries by key, and the keys more than one of them holds.
 
     Entries without a key are left out: they are not the caller's to match.
@@ -32,7 +29,9 @@ def index_live(entries: Iterable[T], key: Callable[[T], str]) -> tuple[dict[str,
     return by_key, shared
 
 
-def check_desired(entries: list[T], key: Callable[[T], str], shared: set[str], what: str) -> None:
+def check_desired[T](
+    entries: list[T], key: Callable[[T], str], shared: set[str], what: str
+) -> None:
     """``ValueError`` for a desired entry with no key, a key given twice, or a
     key that names more than one live entry."""
     seen: set[str] = set()

napalm_device_types/models.py

@@ -5,9 +5,9 @@ These supplement the types defined in napalm.base.models and are used by the
 abstract device-type driver classes in this package.
 """
 
-from typing import Literal, get_args
+from typing import Literal, NotRequired, get_args
 
-from typing_extensions import NotRequired, TypedDict
+from typing_extensions import TypedDict
 
 # ---------------------------------------------------------------------------
 # Common  (shared across device types)