Bump com.vaadin:vaadin-server from 7.0.5 to 7.7.50 in /fancylayouts-addon#1

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dependabot/maven/fancylayouts-addon/com.vaadin-vaadin-server-7.7.50CenterDevice/FancyLayouts:dependabot/maven/fancylayouts-addon/com.vaadin-vaadin-server-7.7.50Copy head branch name to clipboard