chore(deps): update ghcr.io/vexxhost/openstack-venv-builder:2023.2 docker digest to 3404a82 (stable/2023.2)

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ghcr.io/vexxhost/openstack-venv-builder	stage	digest	729ef1f → 3404a82

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

ghcr.io/vexxhost/python-openstackclient:2023.2
ghcr.io/vexxhost/python-openstackclient:stable-2023.2
ghcr.io/vexxhost/python-openstackclient:20bf88a
ghcr.io/vexxhost/python-openstackclient:latest

Digest: ghcr.io/vexxhost/python-openstackclient@sha256:435a02ac3f372abe2e4be403e42a3cbdbf1981f781f013db1df68aec7898bb37