Upgrade the dependency `$ARGUMENTS` in this project.

Follow these steps:

1. **Find the latest version on PyPI.** Use WebSearch to search for the package on pypi.org and determine the latest stable release version.

2. **Update pyproject.toml.** Find the existing version pin for `$ARGUMENTS` in the `dependencies` list in `pyproject.toml` and update it to the latest version. Preserve the existing version specifier style (e.g. `~=` or `>=`).

3. **Create a branch.** Create a new git branch named `upgrade/$ARGUMENTS-<new-version>` (e.g. `upgrade/numpy-2.1.0`).

4. **Commit the change.** Stage and commit `pyproject.toml` with the message: `Upgrade $ARGUMENTS to <new-version>.`

5. **Push and open a PR.** Push the branch and use `gh pr create` to open a pull request. The PR title should be `Upgrade $ARGUMENTS to <new-version>`. The PR body should note the old and new versions.

6. **Report back.** Tell me the PR URL and remind me to check CI results — both the Build workflow and the downstream CCA test workflow should pass before merging.
