chore(deps): update ghcr.io/vexxhost/openstack-venv-builder:2024.2 docker digest to 20b3e34 (#278)

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:2024.2@sha256:130facf0c9a7e6ad375648e7795218b349264ecdc43b37694251131166833ffc AS build
+FROM ghcr.io/vexxhost/openstack-venv-builder:2024.2@sha256:20b3e34f2a1e4ab343f732e0bb68b41aa979ab459b890f127f4f138312602a51 AS build
 RUN \
   --mount=type=bind,from=horizon,source=/,target=/src/horizon,readwrite \
   --mount=type=bind,from=designate-dashboard,source=/,target=/src/designate-dashboard,readwrite \