Bug: `gh aw upgrade` does not set a sha for `setup-cli` in `copilot-setup-steps.yml`

[rspurgeon]

For example:

uses: github/gh-aw/actions/setup-cli@v0.52.1

is generated on gh aw upgrade for

└─❯❯ gh aw --version
gh aw version v0.52.1

[pelikhan]

@copilot ensure that update/upgrade setup-cli sha in that file