fix: Dockerfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-DEBIAN12-ZLIB-6008963
- https://snyk.io/vuln/SNYK-DEBIAN12-GLIBC-1547135
- https://snyk.io/vuln/SNYK-DEBIAN12-KRB5-9712315
- https://snyk.io/vuln/SNYK-DEBIAN12-LIBCAP2-8732577
- https://snyk.io/vuln/SNYK-DEBIAN12-LIBGCRYPT20-1550206

Dockerfile

@@ -1,5 +1,5 @@
 # Use an official Python runtime as a parent image
-FROM python:3.9-slim
+FROM python:3.13.2-slim
 
 # Create a working directory
 WORKDIR /app