[Snyk] Upgrade @umbraco-cms/backoffice from 16.3.2 to 16.4.0#164

jcdc-bot wants to merge 1 commit intodev/v16jcdcdev/jcdcdev.Umbraco.ReadingTime:dev/v16from

snyk-upgrade-64f555766d558a07ff363a159f78d982jcdcdev/jcdcdev.Umbraco.ReadingTime:snyk-upgrade-64f555766d558a07ff363a159f78d982Copy head branch name to clipboard