gitlab CI: don't push to wayland web on scheduled jobs

We have a set of scheduled jobs to rebuild images and clean out old
containers, but since they're largely unsupervised (i.e. not in response to a
MR) we don't want to update the official documentation - just in case
something goes wrong.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

.gitlab-ci.yml

@@ -854,6 +854,9 @@ wayland-web:
            --form "token=<$WAYLAND_WEB_TOKEN"
            --form ref=master
            https://gitlab.freedesktop.org/api/v4/projects/wayland${SLASH}wayland${DOT}freedesktop${DOT}org/trigger/pipeline
+  except:
+    refs:
+      - schedules
   only:
     refs:
       - master

.gitlab-ci/gitlab-ci.tmpl

@@ -638,6 +638,9 @@ wayland-web:
            --form "token=<$WAYLAND_WEB_TOKEN"
            --form ref=master
            https://gitlab.freedesktop.org/api/v4/projects/wayland${SLASH}wayland${DOT}freedesktop${DOT}org/trigger/pipeline
+  except:
+    refs:
+      - schedules
   only:
     refs:
       - master