Use truncated strings from checks api

[mrginglymus]

Consumer implementation of https://github.com/jenkinsci/checks-api-plugin/pull/68

Is there a way we can set a constraint on the version of github-checks-plugin without requiring it to be installed, such that we don't have to go through a gradual deprecation process of the old logic?

[timja]

Is there a way we can set a constraint on the version of github-checks-plugin without requiring it to be installed, such that we don't have to go through a gradual deprecation process of the old logic?

Short of putting it in the release notes, no