Update drupal-update.yml

Github shell is weird

Author: Jelle-S

.github/workflows/drupal-update.yml

@@ -148,7 +148,8 @@ jobs:
         id: composer-update
         run: |
           echo "Running composer update..."
-          output=$({ composer_exit_code=0 && composer update --no-scripts 2>&1; } || { composer_exit_code=1; })
+          composer_exit_code=0
+          output=$(composer update --no-scripts 2>&1 || composer_exit_code=1)
       
           # If composer update fails, exit with a non-zero status
           if [ $composer_exit_code -ne 0 ]; then