feat(Jenkins Node): Add support for self signed certificates

[Joffcom]

Summary

Adds option to support self signed certificates with Jenkins, Also fixes a typo.

Related Linear tickets, Github issues, and Community forum posts

https://community.n8n.io/t/jenkins-ignore-ssl-option/49027

[Joffcom]

@netroy Cloud, This feature is good for infra certs and should be the only option for that but as we have users Self hosting and using Cloud we could offer this up for self hosting users but for those on Cloud we would still have no solution.

At the moment though this is only a draft and if the other option works for the user they can use that and we can close this until someone on cloud asks in the future.