Try to fix tests

Author: fengga

tests/test_e2e.py

@@ -1152,7 +1152,7 @@ class WorldWideRegionalEndpointTestCase(LabBasedTestCase):
     These tests verify that MSAL correctly routes requests to regional vs global endpoints.
     """
     region = "westus"
-    timeout = 2  # Short timeout makes this test case responsive on non-VM
+    timeout = 5  # Short timeout makes this test case responsive on non-VM
 
     def _test_acquire_token_for_client(self, configured_region, expected_region):
         """This is the only grant supported by regional endpoint, for now.

tests/test_mi.py

@@ -462,7 +462,7 @@ def test_arc_by_file_existence_on_linux(self, mocked_exists):
 
     @patch("msal.managed_identity.os.path.exists", return_value=True)
     @patch("msal.managed_identity.sys.platform", new="win32")
-    @patch.dict(os.environ, {"ProgramFiles": "C:\Program Files"})
+    @patch.dict(os.environ, {"ProgramFiles": r"C:\Program Files"})
     def test_arc_by_file_existence_on_windows(self, mocked_exists):
         self.assertEqual(get_managed_identity_source(), AZURE_ARC)
         mocked_exists.assert_called_with(