7 files declare their use of Webhook in Fastly 8.3

Api.php in src/Api.php

FastlySettingsForm.php in src/Form/FastlySettingsForm.php

ImageOptimizerForm.php in src/Form/ImageOptimizerForm.php

PurgeOptionsForm.php in src/Form/PurgeOptionsForm.php

StaleContentOptionsForm.php in src/Form/StaleContentOptionsForm.php

VclHandler.php in src/VclHandler.php

WebhookForm.php in src/Form/WebhookForm.php