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-EXPAT-6227603
- https://snyk.io/vuln/SNYK-DEBIAN12-EXPAT-6420595
- https://snyk.io/vuln/SNYK-DEBIAN12-GCC12-2606941
- https://snyk.io/vuln/SNYK-DEBIAN12-GCC12-5901316

Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.10-slim
+FROM python:3.13.0b4-slim
 
 ENV PYTHONUNBUFFERED 1