Add snmp to Streamlit container for traps

docker/app/Dockerfile

@@ -5,6 +5,7 @@ FROM python:3.11-slim
 RUN apt-get update && apt-get install -y --no-install-recommends \
     build-essential \
     default-libmysqlclient-dev \
+    snmp \
     && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /app