Adding `--no-cache` breaks `requirements_test`

Adding `--no-cache` to the args list for `uv` breaks the `requirements_test` target with an error like this: `error: the argument '--no-cache' cannot be used multiple times`

Start at the uv argument list used by the requirements_test target and trace where --no-cache is added. Run requirements_test to reproduce the duplicate-argument error; done means the target accepts the arguments without reporting that --no-cache is used multiple times.

Written by the indexing model from the issue text.