update pipeline

pipelines/docbot

@@ -13,6 +13,7 @@ pipeline {
             cd ~/docbot || exit 1
             git diff --name-only origin/main main | grep -i 'alembic/versions' > db_script.txt || true
             git pull origin main
+            . .venv/bin/activate
             if [ -s db_script.txt ]; then
               echo "Database migration scripts detected. Running migrations..."
               alembic upgrade head