Bump docker/library/python in /container

Bumps docker/library/python from 3.12.5-alpine3.20 to 3.13.1-alpine3.20.

---
updated-dependencies:
- dependency-name: docker/library/python
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

container/Dockerfile

@@ -15,7 +15,7 @@ EOF
 
 ##### FINAL
 
-FROM public.ecr.aws/docker/library/python:3.12.5-alpine3.20
+FROM public.ecr.aws/docker/library/python:3.13.1-alpine3.20
 
 LABEL org.opencontainers.image.vendor="Ministry of Justice" \
       org.opencontainers.image.authors="Analytical Platform (analytical-platform@digital.justice.gov.uk)" \