Upgrade to Selenium 3.13.0

Closes gh-13681

spring-boot-project/spring-boot-dependencies/pom.xml

@@ -144,7 +144,7 @@
 		<rxjava.version>1.3.8</rxjava.version>
 		<rxjava-adapter.version>1.2.1</rxjava-adapter.version>
 		<rxjava2.version>2.1.16</rxjava2.version>
-		<selenium.version>3.9.1</selenium.version>
+		<selenium.version>3.13.0</selenium.version>
 		<selenium-htmlunit.version>2.31.0</selenium-htmlunit.version>
 		<sendgrid.version>4.2.1</sendgrid.version>
 		<servlet-api.version>4.0.1</servlet-api.version>