Bump python from 3.14.3-slim-trixie to 3.15.0a8-slim-trixie

Bumps python from 3.14.3-slim-trixie to 3.15.0a8-slim-trixie.

---
updated-dependencies:
- dependency-name: python
  dependency-version: 3.15.0a8-slim-trixie
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Dockerfile

@@ -12,7 +12,7 @@
 #   - Runs as a non-root user.
 #   - Sets up the entrypoint and port.
 
-FROM python:3.14.3-slim-trixie AS base-image
+FROM python:3.15.0a8-slim-trixie AS base-image
 
 # Update system packages
 COPY scripts/install-base-packages.sh .