chore(deps): update ghcr.io/vexxhost/openstack-venv-builder:2025.1 docker digest to 56c6998 (#307)

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

@@ -2,7 +2,7 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 # Atmosphere-Rebuild-Time: 2024-06-25T22:49:25Z
 
-FROM ghcr.io/vexxhost/openstack-venv-builder:2025.1@sha256:6dad051465fca0c8ecd9ea9be44dc617353b8f3b6a834be000c6d5659ca2397f AS build
+FROM ghcr.io/vexxhost/openstack-venv-builder:2025.1@sha256:56c6998556249fec59177d31162fc37b3c20eedae766d99b2186b8edb0c6b59b AS build
 RUN <<EOF bash -xe
 uv pip install \
     --constraint /upper-constraints.txt \