chore(deps): update ghcr.io/vexxhost/openstack-venv-builder:main docker digest to 3823b8c (main)

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ghcr.io/vexxhost/openstack-venv-builder	stage	digest	fac2821 → 3823b8c

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

ghcr.io/vexxhost/python-openstackclient:main
ghcr.io/vexxhost/python-openstackclient:latest
ghcr.io/vexxhost/python-openstackclient:27da1db

Digest: ghcr.io/vexxhost/python-openstackclient@sha256:b8b4eb3f39703b56fe7ae02333b50ca3166af4d50684ae6e2cf066fd5e304758