Bump python in /docker

Bumps python from 3.11.11-slim-bookworm to 3.11.12-slim-bookworm.

---
updated-dependencies:
- dependency-name: python
  dependency-version: 3.11.12-slim-bookworm
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

docker/Dockerfile

@@ -1,6 +1,6 @@
 # NOTE(smarnach): To upgrade Python to a new minor or major version, see
 # https://mozilla-eliot.readthedocs.io/en/latest/dev.html#how-to-upgrade-the-python-version
-FROM --platform=linux/amd64 python:3.11.11-slim-bookworm@sha256:7029b00486ac40bed03e36775b864d3f3d39dcbdf19cd45e6a52d541e6c178f0
+FROM --platform=linux/amd64 python:3.11.12-slim-bookworm@sha256:82c07f2f6e35255b92eb16f38dbd22679d5e8fb523064138d7c6468e7bf0c15b
 
 ARG userid=10001
 ARG groupid=10001