Modify deploy.yml to use GH Personal Authentication Token

[AlphaGameDeveloper]

(also add workflow_dispatch as a trigger)

[hirechrisf]

Let's try this and see if it works.
Per: https://docs.github.com/en/actions/security-for-github-actions/security-guides/automatic-token-authentication

"At the start of each workflow job, GitHub automatically creates a unique GITHUB_TOKEN secret to use in your workflow. You can use the GITHUB_TOKEN to authenticate in the workflow job."