chore(deps): update ghcr.io/vexxhost/openstack-venv-builder:zed docker digest to 51dbcf1 (stable/zed)

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ghcr.io/vexxhost/openstack-venv-builder	stage	digest	d6343ca → 51dbcf1

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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:5ccff42
ghcr.io/vexxhost/python-openstackclient:latest

Digest: ghcr.io/vexxhost/python-openstackclient@sha256:b005c81b734c77533838f2be3e8febddaf8fd03a78ca7d18c5b489c8a39911c4