[PATCH] CI: only run pending-updates on master

This job takes a few minutes and isn't useful unless it's being ran for
master, or is being actively worked on.

Signed-off-by: Ross Burton <[email protected]>
---
 .gitlab-ci.yml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index c06b05e474..d7c214b673 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -253,6 +253,11 @@ musca-s1:
 
 pending-updates:
   extends: .setup
+  # Only run this job for the default branch (master), or if forced with
+  # BUILD_FORCE_PENDING_UPDATES.
+  rules:
+    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
+    - if: $BUILD_FORCE_PENDING_UPDATES != null
   artifacts:
     paths:
       - update-report
-- 
2.43.0