Upgrade Vue to 2.7

Natalia Tepluhinarequested to merge
ntepluhina-upgrade-vue into master

What does this MR do and why?

This MR upgrades Vue to 2.7.8

Screenshots or screen recordings

No visual changes

MR acceptance checklist

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

Edited by Natalia Tepluhina

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