fix(ci): update submodule script

.travis.yml

@@ -28,5 +28,5 @@ jobs:
 
     - stage: Artifacts builds
       if: branch = master && type != pull_request
-      script: bash trigger-build.sh
- 
+      script: bash tools/ci-scripts/trigger-build.sh
+

tools/ci-scripts/trigger-build.sh

@@ -6,7 +6,8 @@ then
   git clone https://github.com/"$DOCKER_PUSH_REPO".git docker-push-repo
 
   cd docker-push-repo/freecodecamp
-  git pull --rebase origin master
+  git submodule update --init --remote --recursive
+  git submodule status
   cd ../
   git add freecodecamp
   git -c user.name="$DOCKER_PUSH_USER" -c user.email='travis' \