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              <rules>

                <dependencyConvergence />

                <requireMavenVersion>

                </requireMavenVersion>

              </rules>

            </configuration>

            <goals>

              <goal>enforce</goal>

              <!-- Binds by default to the lifecycle phase: validate -->

            </goals>

          </execution>

      <groupId>com.vaadin</groupId>

      <artifactId>vaadin-server</artifactId>

      <!-- 

        vaadin-server dependency jsoup upgraded due to https://vaadin.com/security/2021-10-27

        further updating of vaadin 7 is no longer possible without purchasing the pro license