Add sample data on test github workflow

Author: botisSmile

.github/workflows/tests.yml

@@ -76,6 +76,9 @@ jobs:
           command: require gally/gally-premium:${{ env.composer_version }}
         env:
           COMPOSER_AUTH: ${{ secrets.COMPOSER_AUTH }}
+      - name: Install sample data package
+        working-directory: api
+        run: composer require "gally/gally-sample-data:${{ env.composer_version }} as ${{ inputs.last_published_version }}"
       - name: Pull images
         run: ${{env.docker_compose_cmd}} pull --ignore-pull-failures || true
       - name: Start services