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_vmware/_tasks.py

@@ -9,14 +9,12 @@ from __future__ import annotations
 
 import time
 from collections.abc import Callable
-from typing import Any, TypeVar
+from typing import Any
 
 from pyVmomi import vmodl
 
 from napalm_vmware._plain import to_plain
 
-T = TypeVar("T")
-
 _POLL_SECONDS = 0.5
 _FREE_LICENSE = (
     "the host runs the free vSphere Hypervisor license, which makes the "
@@ -31,7 +29,7 @@ def fault_message(fault: dict[str, Any]) -> str:
     return fault.get("localizedMessage") or fault.get("msg") or fault.get("_type", "unknown fault")
 
 
-def invoke(call: Callable[..., T], *args: Any, **kwargs: Any) -> T:
+def invoke[T](call: Callable[..., T], *args: Any, **kwargs: Any) -> T:
     """Run a vSphere call, re-raising any ``MethodFault`` as ``RuntimeError``."""
     try:
         return call(*args, **kwargs)