fix: Dockerfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-DEBIAN12-EXPAT-6227597
- https://snyk.io/vuln/SNYK-DEBIAN12-EXPAT-6227603
- https://snyk.io/vuln/SNYK-DEBIAN12-SYSTEMD-6277507
- https://snyk.io/vuln/SNYK-DEBIAN12-SYSTEMD-6277507
- https://snyk.io/vuln/SNYK-DEBIAN12-ZLIB-6008963

Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.9-slim
+FROM python:3.13.0a4-slim
 
 # Install Make to use make commands inside container
 RUN apt-get update