[Skiboot] [PATCH] opal-ci: Drop fedora36, add fedora38

[Reza Arbab]

On Wed, May 17, 2023 at 10:28:53AM -0500, Reza Arbab wrote:
>Fedora 36 has reached end-of-life. Remove it and add Fedora 38.

Applied to master, with the additional fixup of updating the 
opal-ci/Dockerfile-doc symlink which I somehow left out.

Rawhide builds are currently failing, but it's due to this:
https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org/thread/RIIOCKWR2MBYARJNKVZXT3YLXBYGRJAF/

-- 
Reza Arbab