chore(deps): update ghcr.io/vexxhost/openstack-venv-builder:2025.2 docker digest to 14b74c2 (stable/2025.2)

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ghcr.io/vexxhost/openstack-venv-builder	stage	digest	9f24be1 → 14b74c2

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

ghcr.io/vexxhost/python-openstackclient:2025.2
ghcr.io/vexxhost/python-openstackclient:stable-2025.2
ghcr.io/vexxhost/python-openstackclient:ecfa9de
ghcr.io/vexxhost/python-openstackclient:latest

Digest: ghcr.io/vexxhost/python-openstackclient@sha256:2756101fe66d6d17799d2c9389ebee05d66f8b8d0b9c623d9afc4af228b18a89