deps: bump python in the docker-dependencies group

Bumps the docker-dependencies group with 1 update: python.


Updates `python` from `a397410` to `a9bee15`

---
updated-dependencies:
- dependency-name: python
  dependency-version: 3.14-slim-bookworm
  dependency-type: direct:production
  dependency-group: docker-dependencies
...

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

Author: dependabot[bot]

Dockerfile

@@ -1,5 +1,5 @@
 # Use official Python runtime pinned by digest
-FROM python:3.14-slim-bookworm@sha256:a3974109d36f164ca70024bc0d0828ac706e4ccda849f8638d879e91f79e90ec AS builder
+FROM python:3.14-slim-bookworm@sha256:a9bee15510a364124aa24692899d269835683b883de42f7ebec8c293cf679ccb AS builder
 
 WORKDIR /build
 
@@ -11,7 +11,7 @@ RUN apt-get update \
 COPY requirements.txt /build/requirements.txt
 RUN pip wheel --no-cache-dir --wheel-dir /build/wheels -r /build/requirements.txt
 
-FROM python:3.14-slim-bookworm@sha256:a3974109d36f164ca70024bc0d0828ac706e4ccda849f8638d879e91f79e90ec
+FROM python:3.14-slim-bookworm@sha256:a9bee15510a364124aa24692899d269835683b883de42f7ebec8c293cf679ccb
 
 WORKDIR /app