Revert "Bump Jenkins version from 2.57 to 2.90"
Revert "Bump Jenkins version from 2.57 to 2.90"

This reverts commit 0dca68f54c0c5a121a8615d795e9b6aef69b3c73.

prakashsurya/openzfs-ci,prakashsurya/openzfs-ci,openzfs/openzfs-ci,prakashsurya/openzfs-ci,openzfs/openzfs-ci,openzfs/openzfs-ci