Fix chrome version (#8086)

* Fix chrome version

uitest/src/test/java/com/vaadin/tests/VerifyBrowserVersionTest.java

@@ -40,7 +40,7 @@ public class VerifyBrowserVersionTest extends MultiBrowserTest {
             // Chrome version does not necessarily match the desired version
             // because of auto updates...
             browserIdentifier = getExpectedUserAgentString(
-                    getDesiredCapabilities()) + "54";
+                    getDesiredCapabilities()) + "55";
         } else {
             browserIdentifier = getExpectedUserAgentString(desiredCapabilities)
                     + desiredCapabilities.getVersion();