Is your feature request related to a problem? Please describe

Forcing users to add github_token: ${{ secrets.GITHUB_TOKEN }} adds unnecessary boilerplate, since its possible to extract this token in the action.yml file (see here for an example).

Describe the solution you'd like

Update the action.yml file to default the github_token input to ${{ github.token }}, then if users want to use a personal access token or deploy key instead they can set those inputs to override it.