chore(deps): update ghcr.io/vexxhost/openstack-venv-builder:zed docker digest to 188bfca (stable/zed)

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ghcr.io/vexxhost/openstack-venv-builder	stage	digest	367a419 → 188bfca

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renovate[bot]
This pull request has been included in the following image tags:

ghcr.io/vexxhost/python-openstackclient:zed
ghcr.io/vexxhost/python-openstackclient:stable-zed
ghcr.io/vexxhost/python-openstackclient:0926d13
ghcr.io/vexxhost/python-openstackclient:latest

Digest: ghcr.io/vexxhost/python-openstackclient@sha256:b246102bc675039021b38b2b17a796c59173a21a4a55efc12de967819a3a6294