build(deps): bump library/python in /docker/unstable (#3004)

Bumps library/python from 3.13.0-slim to 3.13.1-slim.

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

docker/unstable/Dockerfile

@@ -1,4 +1,4 @@
-FROM docker.io/library/python:3.13.0-slim@sha256:4efa69bf17cfbd83a9942e60e2642335c3b397448e00410063a0421f9727c4c4
+FROM docker.io/library/python:3.13.1-slim@sha256:f41a75c9cee9391c09e0139f7b49d4b1fbb119944ec740ecce4040626dc07bed
 
 # This file is generated from docker:unstable in Taskfile.yml
 COPY var/requirements.txt /var/tmp/build/