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-APT-1541449
- https://snyk.io/vuln/SNYK-DEBIAN12-APT-1541449
- https://snyk.io/vuln/SNYK-DEBIAN12-COREUTILS-1543939
- https://snyk.io/vuln/SNYK-DEBIAN12-OPENSSL-6861561

Dockerfile

@@ -1,5 +1,5 @@
 # Use an official Python runtime as a parent image
-FROM python:3.11-slim
+FROM python:3.13.0b4-slim
 
 # Set the working directory in the container to /app
 WORKDIR /app