The actions rtcamp/action-slack-notify@v2, shivammathur/setup-php@2.15.0, sendgrid/dx-automator/actions/release@main, sendgrid/dx-automator/actions/datadog-release-metric@main, and actions/checkout@v2 are not allowed in sendgrid/php-http-client because all actions must be from a repository owned by your enterprise or created by GitHub. All actions must also be pinned to a full-length commit SHA.