update Python base image and dependencies in Dockerfile and requirements.txt (#207)

Author: howieleung

src/Dockerfile

@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-FROM python:3.13.8-slim-bookworm
+FROM python:3.13.9-slim-bookworm
 
 WORKDIR /code
 

src/requirements.txt

@@ -1,8 +1,8 @@
-fastapi>=0.121.2
-uvicorn[standard]==0.29.0
+fastapi==0.122.0
+uvicorn[standard]==0.30.0
 gunicorn==23.0.0
 azure-identity==1.19.0
-aiohttp==3.13.1
+aiohttp==3.13.2
 openai
 azure_ai_projects==2.0.0b2
 azure-core==1.36.0  # other versions might not compatible
@@ -11,5 +11,5 @@ azure-monitor-opentelemetry-exporter==1.0.0b44
 azure-monitor-opentelemetry==1.8.1 # version such as 1.6.11 isn't compatible
 azure-search-documents
 setuptools==80.9.0
-starlette>=0.47.2 # fix GHSA-2c2j-9gv5-cj73 (CVE-2025-54121) - DoS when parsing large multipart forms
+starlette==0.47.2 # fix GHSA-2c2j-9gv5-cj73 (CVE-2025-54121) - DoS when parsing large multipart forms
 jinja2 # new dependent of fastapi