Install missing dependencies in CI

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Acked-by: Frediano Ziglio <fziglio@redhat.com>

.gitlab-ci.yml

 image: fedora:latest
 before_script:
   - dnf update -y
-  - dnf install -y gcc meson automake libtool make pkgconfig autoconf-archive nss-devel glib2-devel opensc gnutls-utils nss-tools openssl softhsm lcov valgrind libasan clang csbuild which
+  - dnf install -y gcc meson automake libtool make pkgconfig autoconf-archive nss-devel glib2-devel opensc gnutls-utils nss-tools openssl softhsm lcov valgrind libasan clang csbuild which xz
 
 Fedora meson:
   stage: build