[cantarell-fonts] Install pinned dependencies in CI job

[Nikolaus Waxweiler <nwaxweiler src gnome org>]

commit b941eceec0bf6a7637055dd4d30e8a2ea00d555b
Author: Nikolaus Waxweiler <madigens gmail com>
Date:   Wed Dec 19 21:31:00 2018 +0000

    Install pinned dependencies in CI job

 .gitlab-ci.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 2d5bf9e5..8d3ac12e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -3,8 +3,8 @@ image: registry.gitlab.gnome.org/gnome/gnome-runtime-images/base:latest
 build:
   script:
     - dnf install -y libappstream-glib-devel gettext
-    - python3 -m pip install --upgrade pip
-    - pip3 install fontmake psautohint meson ninja
+    - pip3 install --upgrade pip
+    - pip3 install meson ninja -r requirements.txt
     - meson build
     - ninja -C build install