chore(deps): bump python in /contrib/container (#13040)

Bumps python from `f85c569` to `a2b82f3`.

---
updated-dependencies:
- dependency-name: python
  dependency-version: 3.14.8-slim-trixie
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

contrib/container/Dockerfile

@@ -10,7 +10,7 @@
 # - Monitors source files for any changes, and live-reloads server
 
 # Base image last bumped 2026-10-06
-FROM python:3.14.8-slim-trixie@sha256:f85c5697265c178cc6887276c55fe16cf3d14ca35c3df6a5eab3b360534a55d2 AS inventree_base
+FROM python:3.14.8-slim-trixie@sha256:a2b82f3c48559aa0a8446d9af49826b6e2b2016f4cd2afabfe6013ec53729170 AS inventree_base
 
 # Build arguments for this image
 ARG commit_tag=""