chore(deps): update ghcr.io/vexxhost/openstack-venv-builder:2025.1 docker digest to 7cc8619 (#367)

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:2025.1@sha256:33413af437f04d15ae4d6ba7b007d4a5ce51f2a878d4947ffe966e1f2ea50e07 AS build
+FROM ghcr.io/vexxhost/openstack-venv-builder:2025.1@sha256:7cc8619597e6db94ff725e984d99a9a82c9d05e7325ccc8c7c7b4a477e5eae14 AS build
 RUN --mount=type=bind,from=heat,source=/,target=/src/heat,readwrite <<EOF bash -xe
 uv pip install \
     --constraint /upper-constraints.txt \