VCST-5487,VCST-5683-vcst-dev-deployment

[vc-ci]

ci: Automated update vc-frontend from PR 2430 VirtoCommerce/vc-frontend#2430

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Note

Low Risk
Low-risk automated artifact URL bump for a pre-release theme package; no application logic changes.

Overview
Updates the deployed B2B Vue theme package URL in theme/artifact.json to the build from vc-frontend PR 2430.

This is an automated CI bump that points environment theme deployment at vc-theme-b2b-vue-2.55.0-pr-2430-6abb-6abbd868.zip instead of the previous alpha package.

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