Merge branch 'ggillies/move-rel-env-to-master-ref' into 'master'

Move release-environments child pipeline to be sourced from master

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/139474



Merged-by: Rémy Coutable <remy@rymai.me>
Approved-by: Rémy Coutable <remy@rymai.me>
Reviewed-by: Rémy Coutable <remy@rymai.me>
Co-authored-by: Graeme Gillies <ggillies@gitlab.com>

.gitlab/ci/release-environments.gitlab-ci.yml

@@ -20,4 +20,7 @@ start-release-environments-pipeline:
     PARENT_PIPELINE_ID: $CI_PIPELINE_ID
   trigger:
     strategy: depend
-    include: .gitlab/ci/release-environments/main.gitlab-ci.yml
+    include:
+      - project: 'gitlab-org/gitlab'
+        ref: 'master'
+        file: '.gitlab/ci/release-environments/main.gitlab-ci.yml'