chore(deps): update vexxhost images (stable/2026.1)

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ghcr.io/vexxhost/openstack-venv-builder	stage	digest	260aa77 → 4015712
ghcr.io/vexxhost/python-base	final	digest	adf79ec → a475f29

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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:f1df3fe
ghcr.io/vexxhost/python-openstackclient:latest

Digest: ghcr.io/vexxhost/python-openstackclient@sha256:112603dba38ef92203bb14490dbb5f64481efbd0610c9f92c70c23ffc10922db