[PATCH 3/4] iotests: Change imports for Python 3.13

[John Snow]

Python 3.13 isn't out yet, but it's in beta and Fedora is ramping up to
make it the default system interpreter for Fedora 41.

They moved our cheese for where ContextManager lives; add a conditional
to locate it while we support both pre-3.9 and 3.13+.

Signed-off-by: John Snow <jsnow@redhat.com>
---
 tests/qemu-iotests/testenv.py    | 7 ++++++-
 tests/qemu-iotests/testrunner.py | 9 ++++++---
 2 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/tests/qemu-iotests/testenv.py b/tests/qemu-iotests/testenv.py
index 588f30a4f14..96d69e56963 100644
--- a/tests/qemu-iotests/testenv.py
+++ b/tests/qemu-iotests/testenv.py
@@ -25,7 +25,12 @@
 import random
 import subprocess
 import glob
-from typing import List, Dict, Any, Optional, ContextManager
+from typing import List, Dict, Any, Optional
+
+if sys.version_info >= (3, 9):
+    from contextlib import AbstractContextManager as ContextManager
+else:
+    from typing import ContextManager
 
 DEF_GDB_OPTIONS = 'localhost:12345'
 
diff --git a/tests/qemu-iotests/testrunner.py b/tests/qemu-iotests/testrunner.py
index 7b322272e92..2e236c8fa39 100644
--- a/tests/qemu-iotests/testrunner.py
+++ b/tests/qemu-iotests/testrunner.py
@@ -27,11 +27,14 @@
 import shutil
 import sys
 from multiprocessing import Pool
-from typing import List, Optional, Any, Sequence, Dict, \
-        ContextManager
-
+from typing import List, Optional, Any, Sequence, Dict
 from testenv import TestEnv
 
+if sys.version_info >= (3, 9):
+    from contextlib import AbstractContextManager as ContextManager
+else:
+    from typing import ContextManager
+
 
 def silent_unlink(path: Path) -> None:
     try:
-- 
2.45.0