allow two possible error messages in webserver test (#7749)

GitOrigin-RevId: f0b9024c743eae162260a3a51a8826d992248685

integration_tests/webserver/test_rest_connector.py

@@ -236,8 +236,13 @@ class InputSchema(pw.Schema):
     pw.io.csv.write(sum, output_path)
     pw.io.csv.write(sum_dup, output_path)
 
-    with pytest.raises(OSError, match="error while attempting to bind on address"):
+    with pytest.raises(OSError) as exc_info:
         pw.run()
+    error_message = str(exc_info.value)
+    assert (
+        "error while attempting to bind on address" in error_message
+        or "Address already in use" in error_message
+    )
 
 
 def _test_server_two_endpoints(