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	0fd6927 → fd7885a
ghcr.io/vexxhost/python-base	final	digest	b397120 → 73d3e67

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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:61d4c44
ghcr.io/vexxhost/python-openstackclient:latest

Digest: ghcr.io/vexxhost/python-openstackclient@sha256:0f26770cc54a644a70e090855af6fd1aa1dbab10c69d3632ce06fadccc63fb18