[Libguestfs] [PATCH libnbd CI] ci: Drop Fedora 33, add Fedora 35

[Richard W.M. Jones]

Hi Martin,

The pipeline failed, and I'm assuming this is because Fedora 33 is out
of support.  The log is not very helpful:

https://gitlab.com/nbdkit/libnbd/-/jobs/1874368914

Also we don't seem to have lcitool in Fedora anywhere obvious, so
instead I just updated the generated files directly.

Also, wouldn't it be nice if we could specify "fedora:n" and
"fedora:n-1" instead of having to update this every six months ...

Rich.