chore(server): update server start script dependencies check

- server_start.sh: add multipart to dependencies check for file upload support

server/server_start.sh

@@ -236,7 +236,7 @@ run_bootstrap_python() {
 }
 
 dependencies_ready() {
-    "$PYTHON_BIN" -c "import alembic, dotenv, email_validator, fastapi, jwt, psycopg, pydantic_settings, sqlalchemy, uvicorn" >/dev/null 2>&1
+    "$PYTHON_BIN" -c "import alembic, dotenv, email_validator, fastapi, jwt, multipart, psycopg, pydantic_settings, sqlalchemy, uvicorn" >/dev/null 2>&1
 }
 
 pip_ready() {