chore(deps): update ghcr.io/vexxhost/openstack-venv-builder:2024.2 docker digest to a6bd2cb (#289)

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:2024.2@sha256:fbc0162f8fb4c12392bb5b87fdc19250dc6be719afd23329be6a7f38530753b4 AS build
+FROM ghcr.io/vexxhost/openstack-venv-builder:2024.2@sha256:a6bd2cbfa19e664dab24faa9c58c0af8d3ba72645e985d49b02aaa18ec5aa6c0 AS build
 RUN --mount=type=bind,from=heat,source=/,target=/src/heat,readwrite <<EOF bash -xe
 uv pip install \
     --constraint /upper-constraints.txt \