chore(deps): update ghcr.io/vexxhost/openstack-venv-builder:main docker digest to 78e8669 (#524)

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:main@sha256:01cd11ac693c7b6fb944e9209838e4ee7d1a43ce31427874efaa68db06822fe5 AS build
+FROM ghcr.io/vexxhost/openstack-venv-builder:main@sha256:78e8669771818e3d3ede8e590ee02c9f3f195fe91bf28f3ca7241672e67033c4 AS build
 RUN <<EOF bash -xe
 uv pip install \
     --constraint /upper-constraints.txt \