Bump eventsource from 1.0.7 to 1.1.1 in /step-0-getting-started#23

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dependabot/npm_and_yarn/step-0-getting-started/eventsource-1.1.1daggerok/fullstack-vaadin-boot-apps:dependabot/npm_and_yarn/step-0-getting-started/eventsource-1.1.1Copy head branch name to clipboard