[gjs/mozjs78] Update 'build_recommended' pinned image.

[Evan Welsh <ewlsh src gnome org>]

commit b2f297b14e27849ea7265ff76a9ea214d5c0c111
Author: Evan Welsh <noreply evanwelsh com>
Date:   Mon Jul 6 00:42:02 2020 -0500

    Update 'build_recommended' pinned image.

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 40195fde..30ce4c18 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -48,7 +48,7 @@ stages:
 build_recommended:
   <<: *build
   stage: source_check
-  image: registry.gitlab.gnome.org/gnome/gjs:job-745493_fedora.mozjs68-debug  # pinned on purpose
+  image: registry.gitlab.gnome.org/gnome/gjs:job-797062_fedora.mozjs78-debug  # pinned on purpose
   variables:
     TASK_ID: "fedora-x86_64-gcc-debug-default-check"
     TEST_OPTS: --verbose --no-stdsplit --print-errorlogs