CI: Workaround resetting tsflags=nodocs

We need installing glib2 documentation files for building libmodulemd
documentation.

rpm-software-management/dnf5#1331

Author: ppisar

.ci/fedora/get_fedora_deps.sh

@@ -6,7 +6,11 @@ set -x
 SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 pushd $SCRIPT_DIR
 
-dnf -y --setopt=install_weak_deps=False --setopt=tsflags='' \
+# Work around a DNF5 bug with resetting tsflags
+# <https://github.com/rpm-software-management/dnf5/issues/1331>.
+sed -i -e 's/\<nodocs\>//' /etc/dnf/dnf.conf
+
+dnf --dump-main-config -y --setopt=install_weak_deps=False --setopt=tsflags='' \
        --nogpgcheck --quiet install --skip-broken \
     python3-black \
     clang \