chore(deps): update ghcr.io/vexxhost/openstack-venv-builder:main docker digest to 2bd9736 (#349)

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

Dockerfile

@@ -1,7 +1,7 @@
 # SPDX-FileCopyrightText: © 2025 VEXXHOST, Inc.
 # SPDX-License-Identifier: GPL-3.0-or-later
 
-FROM ghcr.io/vexxhost/openstack-venv-builder:main@sha256:80c203dc094a839ce4ad3dce5d1409ec5d9679b25c1024b62066ed6e8fe6057e AS build
+FROM ghcr.io/vexxhost/openstack-venv-builder:main@sha256:2bd9736a2ec582e8bd2625f5563c9cf6d34e077dc6977b668ccfefee1e63437b AS build
 RUN --mount=type=bind,from=keystone,source=/,target=/src/keystone,readwrite <<EOF bash -xe
 uv pip install \
     --constraint /upper-constraints.txt \