Don't install aiohttp on Windows 3.14

Author: srittau

requirements-tests.txt

@@ -6,7 +6,9 @@ pyright==1.1.400
 pytype==2024.10.11; platform_system != "Windows" and python_version >= "3.10" and python_version < "3.13"
 
 # Libraries used by our various scripts.
-aiohttp==3.11.15
+# TODO (2025-05-09): Installing this on Python 3.14 on Windows fails at
+# the moment.
+aiohttp==3.11.15; python_version < "3.14"
 # TODO (2025-05-09): No wheels exist for Python 3.14 yet, slowing down CI
 # considerably and prone to fail.
 grpcio-tools>=1.66.2; python_version < "3.14" # For grpc_tools.protoc