chore(deps): update ghcr.io/vexxhost/openstack-venv-builder:2026.1 docker digest to 3476c84 (stable/2026.1)

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ghcr.io/vexxhost/openstack-venv-builder	stage	digest	6058848 → 3476c84

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

ghcr.io/vexxhost/python-openstackclient:2026.1
ghcr.io/vexxhost/python-openstackclient:stable-2026.1
ghcr.io/vexxhost/python-openstackclient:fe0bbd5
ghcr.io/vexxhost/python-openstackclient:latest

Digest: ghcr.io/vexxhost/python-openstackclient@sha256:d840ff897e30ecfca6ffe4ddb024e6995ac632920973a249ed0f71ad7187a857