Update skeletonLoader for licenses table row

What does this MR do and why?

This MR replace the deprecated GlSkeletonLoading with `GlSkeletonLoader´ to solve #363748 (closed)

Screenshots or screen recordings

before	after

How to set up and validate locally

1. Set up a Project with the License Compliance Job (when in doubt clone: https://gitlab.com/gitlab-examples/security/security-reports)
2. Go to Security & Compliance -> License Compliance

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.