chore(deps): update ghcr.io/vexxhost/openstack-venv-builder:2025.2 docker digest to c16ba5d (#268)

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: 2025-10-14T10:18:12Z
 
-FROM ghcr.io/vexxhost/openstack-venv-builder:2025.2@sha256:d9094fe0ece704796628af3aaceb36d94250427b094bf90005b4a4df072fdad0 AS build
+FROM ghcr.io/vexxhost/openstack-venv-builder:2025.2@sha256:c16ba5d44beae602145877b7d58699ae0cce479c5effc5f2e66851ed50a08c2c AS build
 RUN <<EOF bash -xe
 uv pip install \
     --constraint /upper-constraints.txt \