VCST-4543-vcst-qa-deployment

[vc-ci]

ci: Automated update vc-frontend from PR 2161 VirtoCommerce/vc-frontend#2161

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Note

Low Risk
Low risk: a single configuration change updating the theme artifact download URL, with no code or logic changes.

Overview
Updates theme/artifact.json to point the URL at a newer prerelease vc-theme-b2b-vue package (PR 2161 build) instead of the previous PR 2121 artifact.

^{Written by Cursor Bugbot for commit 45469e2. This will update automatically on new commits. Configure here.}

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