Skip SSL verification per webook

[canny]

Currently in order to skip SSL verification for a webhook one must turn it off globally using the PACT_BROKER_DISABLE_SSL_VERIFICATION environment variable.
This is to request an option added in the webhook config to turn off SSL verification just for the webhook.
A use case for this is when there is a URL mismatch in certificate validation. (eg using a VPC endpoint to connect to the destination and the URLs are not matching)

https://pact.canny.io/admin/board/feature-requests/p/skip-ssl-verification-per-webook

[canny]

This issue has been linked to a Canny post: Skip SSL verification per webook 🎉