build(docker): bump python in the docker group

Bumps the docker group with 1 update: python.


Updates `python` from 3.12-slim to 3.13-slim

---
updated-dependencies:
- dependency-name: python
  dependency-type: direct:production
  dependency-group: docker
...

Signed-off-by: dependabot[bot] <[email protected]>

Dockerfile

@@ -1,7 +1,7 @@
 ##
 # base
 ##
-FROM python:3.12-slim AS base
+FROM python:3.13-slim AS base
 LABEL maintainer="[email protected]"
 
 # set up user