chore(deps): bump python in /docker

Bumps python from 3.11.9-slim-bookworm to 3.12.6-slim-bookworm.

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

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

docker/Dockerfile.armhf

@@ -1,4 +1,4 @@
-FROM python:3.11.9-slim-bookworm as base
+FROM python:3.12.6-slim-bookworm as base
 
 # Setup env
 ENV LANG C.UTF-8