feat(update-backend): streamline dependency management and migration process

- Updated the npm install command to remove the production flag, allowing for the installation of all dependencies.
- Added a step to prune development dependencies after running database migrations, optimizing the deployment environment.

update-backend.sh

@@ -22,7 +22,7 @@ rm -rf logs/
 rm -rf tmp/
 
 echo "Installing dependencies..."
-npm ci --production
+npm ci
 
 echo "Übernehme .env-Dateien vom Live-System..."
 
@@ -65,6 +65,9 @@ export STAGE="$STAGE"
 echo "Führe Migrationen aus..."
 npm run db:migrate
 
+echo "Entferne Dev-Dependencies nach Migrationen..."
+npm prune --omit=dev
+
 if [ "${RUN_LEGACY_SYNC_DB_ON_DEPLOY:-0}" = "1" ]; then
   echo "RUN_LEGACY_SYNC_DB_ON_DEPLOY=1 gesetzt -> führe zusätzlich legacy sync-db aus..."
   npm run sync-db