Python: Bump starlette from 0.52.1 to 1.3.1 in /python

python/tests/unit/data/conftest.py

@@ -2,6 +2,7 @@
 
 
 import ast
+import asyncio
 from collections.abc import Mapping, Sequence
 from dataclasses import dataclass
 from typing import Annotated, Any
@@ -23,6 +24,24 @@
 from semantic_kernel.kernel_types import OptionalOneOrMany
 
 
+@fixture(autouse=True)
+def _ensure_event_loop():
+    """Ensure a current event loop exists before each test.
+
+    Works around a pytest-asyncio 0.26 bug on Windows Python 3.10 where
+    asyncio.set_event_loop(None) can be left as state after a previous test's
+    teardown, and _provide_clean_event_loop does not recover because it only
+    creates a fresh loop when old_loop is not None.  By guaranteeing a non-None
+    loop at fixture-setup time, _temporary_event_loop_policy saves a valid
+    old_loop, so the teardown path restores a valid loop instead of None.
+    """
+    try:
+        asyncio.get_event_loop()
+    except RuntimeError:
+        asyncio.set_event_loop(asyncio.new_event_loop())
+    yield
+
+
 @fixture
 def DictVectorStoreRecordCollection() -> type[VectorSearch]:
     class DictVectorStoreRecordCollection(