chore(deps): update ghcr.io/vexxhost/openstack-venv-builder:2025.1 docker digest to 638e20e (stable/2025.1)

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ghcr.io/vexxhost/openstack-venv-builder	stage	digest	95d867d → 638e20e

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

ghcr.io/vexxhost/python-openstackclient:2025.1
ghcr.io/vexxhost/python-openstackclient:stable-2025.1
ghcr.io/vexxhost/python-openstackclient:26f314a
ghcr.io/vexxhost/python-openstackclient:latest

Digest: ghcr.io/vexxhost/python-openstackclient@sha256:df4e1a3dc58a054a6bdbf5962f51211607e70cb113a42ab6205aad4b2ac232e3