ci: fix fedora jobs

utils/tests/gitlab-ci-fedora.yml

@@ -15,6 +15,7 @@
       - $FEDORA == "True"
   before_script:
     - dnf install gcc gcc-c++ cmake ninja-build python python-devel ccache gsl gsl-devel gtk3 gtk3-devel sqlite sqlite-devel libxml2 libxml2-devel openmpi openmpi-devel boost-devel pygobject3-devel python3-gobject gobject-introspection-devel goocanvas2-devel graphviz-devel graphviz ipython --assumeyes
+    - source /etc/profile.d/modules.sh
     - module load mpi/openmpi-x86_64
   variables:
     COMPILER: g++