ruff: enable TC — flake8-type-checking (#11368)

## Problem

`TYPE_CHECKING` is used inconsistently across Python tests.

## Summary of changes
- Update `ruff`: 0.7.0 -> 0.11.2
- Enable TC (flake8-type-checking):
https://docs.astral.sh/ruff/rules/#flake8-type-checking-tc
- (auto)fix all new issues

test_runner/performance/test_logical_replication.py

@@ -1,7 +1,6 @@
 from __future__ import annotations
 
 import time
-from collections.abc import Iterator
 from contextlib import contextmanager
 from typing import TYPE_CHECKING, cast
 
@@ -14,6 +13,7 @@ from fixtures.log_helper import log
 from fixtures.neon_fixtures import logical_replication_sync
 
 if TYPE_CHECKING:
+    from collections.abc import Iterator
     from subprocess import Popen
     from typing import AnyStr