0.8.0 Add `github_webhooks_token` and `s3_bucket_force_destroy` variables

what

• Add github_webhooks_token variable
• Add s3_bucket_force_destroy variable

why

• Make GitHub token for creating webhooks optional. 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 from geodesic or CI/CD that have access to the GITHUB_TOKEN environment variable, which in turn could be sourced from SSM using chamber

• s3_bucket_force_destroy is a boolean that indicates all objects should be deleted from the CodePipeline artifact store S3 bucket so that the bucket can be destroyed without error

references

• https://github.com/cloudposse/terraform-github-repository-webhooks/releases/tag/0.4.0