chore(deps): update ghcr.io/vexxhost/openstack-venv-builder:2023.1 docker digest to 903c685 (stable/2023.1)

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ghcr.io/vexxhost/openstack-venv-builder	stage	digest	534997c → 903c685

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

ghcr.io/vexxhost/python-openstackclient:2023.1
ghcr.io/vexxhost/python-openstackclient:stable-2023.1
ghcr.io/vexxhost/python-openstackclient:54658ed
ghcr.io/vexxhost/python-openstackclient:latest

Digest: ghcr.io/vexxhost/python-openstackclient@sha256:c892b6bf40fd7c056b70080c61152d0f655d3336563777823736c06d4be66396