fix: Dockerfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://dev.snyk.io/vuln/SNYK-DEBIAN12-EXPAT-6227597
- https://dev.snyk.io/vuln/SNYK-DEBIAN12-OPENSSL-6592092
- https://dev.snyk.io/vuln/SNYK-DEBIAN12-SYSTEMD-6277507
- https://dev.snyk.io/vuln/SNYK-DEBIAN12-SYSTEMD-6277507
- https://dev.snyk.io/vuln/SNYK-DEBIAN12-ZLIB-6008963

Dockerfile

@@ -19,7 +19,7 @@ COPY .git .git
 RUN echo $(git rev-parse --short HEAD) > .version
 RUN echo $(date -Is) >> .version
 
-FROM python:3.10-slim AS runtime
+FROM python:3.13.0b1-slim AS runtime
 
 WORKDIR /app