[gnome-system-monitor] install gcc-c++ on fedora

[Robert Roth <robertroth src gnome org>]

commit cc5848d34062b6218349ac77d07d4c35b1f1195f
Author: ToMe25 <tome25 gmx de>
Date:   Mon Sep 13 01:49:21 2021 +0000

    install gcc-c++ on fedora

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 7a12092e..9d317fa9 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -12,8 +12,8 @@ variables:
     texinfo-tex
   FEDORA_DEPENDENCIES: # packages required to build the system monitor on fedora.
     appstream
+    gcc-c++
     git
-    gettext
     glibmm24-devel
     gtkmm30-devel
     itstool