Bump handlebars from 4.0.11 to 4.7.2 in /ServerSideEditing/ClientApp#3

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dependabot/npm_and_yarn/ServerSideEditing/ClientApp/handlebars-4.7.2SyncfusionExamples/How-to-handle-server-side-data-editing-in-Angular-Tree-Grid:dependabot/npm_and_yarn/ServerSideEditing/ClientApp/handlebars-4.7.2Copy head branch name to clipboard