workflows/issue-comment-created.yml: Add GH token input
workflows/issue-comment-created.yml: Add GH token input

Addresses reported error at
https://github.com/hashicorp/packer/runs/2722241524?check_suite_focus=true

mitchellh/packer,hashicorp/packer,mitchellh/packer,mitchellh/packer,mitchellh/packer,hashicorp/packer,hashicorp/packer,pecigonzalo/packer,pecigonzalo/packer,mitchellh/packer,hashicorp/packer,pecigonzalo/packer,pecigonzalo/packer