Add a test to run Jenkins Configuration as Code (JCasC) in the plugin to certify it's compatible. It's using a new utility class created in JCasC. It's still unreleased. This task depends on this PR:
https://github.com/jenkinsci/configuration-as-code-plugin/pull/908
PR: https://github.com/jenkinsci/ssh-credentials-plugin/pull/42
Pending of https://github.com/jenkinsci/configuration-as-code-plugin/pull/908