[gnome-runtime-images] (3 commits) Non-fast-forward update to branch alatiera/scheduled-stable-rebuilds

[Jordan Petridis <jpetridis src gnome org>]

The branch 'alatiera/scheduled-stable-rebuilds' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  e9f5183... Avoid rebuilding base images unless needed
  e6c44a0... avoid rebuilding stable releases unless needed

Commits added to the branch:

  b550d2c... Avoid rebuilding base images unless needed
  491026e... avoid rebuilding stable releases unless on scheduled pipeli
  5af97f5... add manual jobs for docker images to rebuild if needed