ci: Refresh contents

Notable changes:

  * the CentOS Stream 8 container is now using a proper base
    image instead of starting from a CentOS 8 image and then
    adding the CentOS Stream 8 repositories on top;

  * distributions that have a perl-base package are now using
    that one instead of the regular perl package, which
    contains a bunch of features we don't need, resulting in
    smaller containers.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>

ci/containers/fedora-rawhide-cross-mingw64.Dockerfile

@@ -2,7 +2,7 @@
 #
 #  $ lcitool dockerfile --cross mingw64 fedora-rawhide libvirt
 #
-# https://gitlab.com/libvirt/libvirt-ci/-/commit/6552fd8885423cfc383a58255eca542937f7d4ea
+# https://gitlab.com/libvirt/libvirt-ci/-/commit/1d4e10a04c6a0d29302003244a9dc4dc3c9d06f0
 
 FROM registry.fedoraproject.org/fedora:rawhide
 
@@ -47,7 +47,7 @@ exec "$@"' > /usr/bin/nosync && \
         ninja-build \
         numad \
         parted \
-        perl \
+        perl-base \
         polkit \
         python3 \
         python3-docutils \