OO-5157: update XStream and selenium webdrivers

pom.xml

@@ -2126,7 +2126,7 @@
 		<dependency>
 			<groupId>com.thoughtworks.xstream</groupId>
 			<artifactId>xstream</artifactId>
-			<version>1.4.14</version>
+			<version>1.4.15</version>
 		</dependency>
 		<dependency>
 			<groupId>com.sun.mail</groupId>
@@ -2334,7 +2334,7 @@
 		<dependency>
 			<groupId>org.eu.ingwar.tools</groupId>
 			<artifactId>arquillian-suite-extension</artifactId>
-			<version>1.2.0</version>
+			<version>1.2.2</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>

src/test/resources/arquillian.xml

@@ -28,9 +28,9 @@
 		<property name="chromeDriverBinary">target/drone/675a673c111fdcc9678d11df0e69b334/chromedriver</property>
 		<property name="firefoxDriverBinary">target/drone/ce03addb1fc8c24900011f90fc80f3c1/geckodriver</property>
 		-->
-		<property name="firefoxDriverVersion">${webdriver.firefox.version:v0.27.0}</property>
+		<property name="firefoxDriverVersion">${webdriver.firefox.version:v0.28.0}</property>
 		<property name="firefoxUserPreferences">src/test/profile/firefox/prefs.js</property>
-		<property name="chromeDriverVersion">${webdriver.chrome.version:86.0.4240.22}</property>
+		<property name="chromeDriverVersion">${webdriver.chrome.version:87.0.4280.88}</property>
 		<property name="chromeArguments">${webdriver.chrome.arguments}</property>
 		<property name="chromeExperimentalOption">{
 			"prefs":{"credentials_enable_service": false, "profile.password_manager_enabled": false }