0.4.0 Make `github_token` optional
what
- Make
github_token
optional
why
- If not provided, can be sourced from the
GITHUB_TOKEN
environment variable - Sourcing from the
GITHUB_TOKEN
environment variable is useful when the module is provisioned fromgeodesic
or CI/CD that have access to theGITHUB_TOKEN
environment variable, which in turn could be sourced from SSM usingchamber