chore(deps): update ghcr.io/vexxhost/openstack-venv-builder:2023.1 docker digest to 39b2c2c (stable/2023.1)

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ghcr.io/vexxhost/openstack-venv-builder	stage	digest	6a5fa51 → 39b2c2c

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

ghcr.io/vexxhost/python-openstackclient:2023.1
ghcr.io/vexxhost/python-openstackclient:stable-2023.1
ghcr.io/vexxhost/python-openstackclient:64d6649
ghcr.io/vexxhost/python-openstackclient:latest

Digest: ghcr.io/vexxhost/python-openstackclient@sha256:f4d5ef970fe9ef2104dd8c713595391c978581bde7103af6477c42d620d2173c