chore(deps): update ghcr.io/vexxhost/openstack-venv-builder:2025.2 docker digest to 450d476 (#388)

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:2025.2@sha256:657a94758c1e6d6f4da3942822e7ee3d018ee42f9abd44869e6c7da44a917912 AS build
+FROM ghcr.io/vexxhost/openstack-venv-builder:2025.2@sha256:450d47680e7569fdf5caa906e10870b48797fd94fd0f3d0f90fe9decdd440856 AS build
 RUN --mount=type=bind,from=barbican,source=/,target=/src/barbican,readwrite <<EOF bash -xe
 uv pip install \
     --constraint /upper-constraints.txt \