Update TestBench version to 5.2.0 (#11058)

bom/pom.xml

@@ -18,7 +18,7 @@
 
     <properties>
         <vaadin.spring.version>3.0.1</vaadin.spring.version>
-        <vaadin.testbench.version>5.2.0.beta1</vaadin.testbench.version>
+        <vaadin.testbench.version>5.2.0</vaadin.testbench.version>
         <vaadin.cdi.version>3.0.1</vaadin.cdi.version>
         <vaadin.context-menu.version>2.0.0</vaadin.context-menu.version>
     </properties>

pom.xml

@@ -60,7 +60,7 @@
         <sonar.issuesReport.html.enable>true</sonar.issuesReport.html.enable>
 
         <vaadin.icons.version>3.0.1</vaadin.icons.version>
-        <vaadin.testbench.version>5.2.0.beta1</vaadin.testbench.version>
+        <vaadin.testbench.version>5.2.0</vaadin.testbench.version>
     </properties>
 
     <pluginRepositories>