[Feature] add GitHub CLI to salt-prime to make contributor PR reviews easier to test

[TimidRobot]

Problem

Reviewing pull requests (PRs) from forks is more difficult without the

Description

The GitHub CLI (command line interface, gh) makes it easy to review PRs from forked repos

Additional context

• https://github.com/cli/cli?tab=readme-ov-file#linux--bsd

[Shafiya-Heena]

• add the gh package
• handled in https://github.com/creativecommons/sre-salt-prime/pull/276

changes are live in production