build(demo): update commons-demo to version 3.0.0

Author: Michael Knigge

pom.xml

@@ -62,6 +62,10 @@
             <id>Vaadin Directory</id>
             <url>https://maven.vaadin.com/vaadin-addons</url>
         </repository>
+        <repository>
+                <id>FlowingCode Releases</id>
+                <url>https://maven.flowingcode.com/releases</url>
+        </repository>
     </repositories>
 
     <dependencies>
@@ -118,7 +122,7 @@
 		<dependency>
 			<groupId>com.flowingcode.vaadin.addons.demo</groupId>
 			<artifactId>commons-demo</artifactId>
-			<version>2.1.0-SNAPSHOT</version>
+			<version>3.0.0</version>
 			<scope>test</scope>
 		</dependency>
     </dependencies>