Upgrade to Selenium 3.5.3

Closes gh-10221

spring-boot-dependencies/pom.xml

@@ -146,7 +146,7 @@
 		<rxjava.version>1.3.0</rxjava.version>
 		<rxjava-adapter.version>1.2.1</rxjava-adapter.version>
 		<rxjava2.version>2.1.3</rxjava2.version>
-		<selenium.version>3.4.0</selenium.version>
+		<selenium.version>3.5.3</selenium.version>
 		<selenium-htmlunit.version>2.27</selenium-htmlunit.version>
 		<sendgrid.version>4.1.0</sendgrid.version>
 		<servlet-api.version>3.1.0</servlet-api.version>