chore(deps): update ghcr.io/vexxhost/openstack-venv-builder:main docker digest to fcb9240 (#749)

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@sha256:94f1a010570f268c3d444e9b07205f49ffd3462f7927754f102b6f6bdeeb2b86 AS build
+FROM ghcr.io/vexxhost/openstack-venv-builder:main@sha256:fcb9240a00e8ab358b1cacdcce6bd2a58fcc61b9206e751838a3fc636ee6c162 AS build
 RUN <<EOF bash -xe
 uv pip install \
     --constraint /upper-constraints.txt \