feat(github-release): ✨ prioritize `gh` cli and reload env between releases

[xaf]

This change ensures the GitHub CLI (cli/cli) is installed first when multiple GitHub releases are configured and it is provided in the list, and reloads the environment between release installations to ensure proper environment variables are available for each subsequent release (including specifically for gh to be available).

Closes https://github.com/xaf/omni/issues/1051