Update dependency MarkupSafe to v2.1.5

Author: renovate[bot]

llama-backend/requirements.txt

@@ -4,7 +4,7 @@ flask[async]==2.3.0
 gunicorn==20.0.4
 itsdangerous==2.1.2
 Jinja2==3.1.2
-MarkupSafe==2.1.1
+MarkupSafe==2.1.5
 Werkzeug==2.3.0
 requests==2.31.0
 langchain==0.0.321