build(deps): bump python from d1bdffe to f6a64ef in /docker

Bumps python from `d1bdffe` to `f6a64ef`.

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

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

docker/Dockerfile

@@ -1,6 +1,6 @@
 # This should be kept in sync with the python version used in .devcontainer/Dockerfile and
 # docker/images/fakesentry/Dockerfile
-FROM --platform=linux/amd64 python:3.11.10-slim-bullseye@sha256:d1bdffe2ca65ea6b4862307fafed6c10a99e86a7d390140591a7dd8377bd59a6
+FROM --platform=linux/amd64 python:3.11.10-slim-bullseye@sha256:f6a64ef0a5cc14855b15548056a8fc77f4c3526b79883fa6709a8e23f676ac34
 
 # Set up user and group
 ARG groupid=10001