chore(deps): update ghcr.io/vexxhost/openstack-venv-builder:2023.2 docker digest to a3c100c (#257)

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: 2024-06-26T17:38:39Z
 
-FROM ghcr.io/vexxhost/openstack-venv-builder:2023.2@sha256:8d55fafcd03dd858052c752c50220a24ef63072500e4384d26db50b12c733821 AS build
+FROM ghcr.io/vexxhost/openstack-venv-builder:2023.2@sha256:a3c100ca1a7a3d2a11a89c12ff9b034e4325ab04aa851e43c3304c93d4e7bc84 AS build
 RUN <<EOF bash -xe
 uv pip install \
     --constraint /upper-constraints.txt \