VCST-4866-vcst-qa-deployment

[vc-ci]

ci: Automated update vc-frontend from PR 2242 VirtoCommerce/vc-frontend#2242

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Note

Low Risk
Low risk: this only updates a single artifact URL pointer to a new prerelease theme package, with no code logic changes.

Overview
Updates theme/artifact.json to point to a new prerelease vc-theme-b2b-vue ZIP (2.45.0, PR-2242) by replacing the previous package URL.

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