Update to htmlunit:2.30

Fixes: gh-5283

gradle/dependency-management.gradle

@@ -89,7 +89,7 @@ dependencyManagement {
 		dependency 'net.sf.ehcache:ehcache:2.10.4'
 		dependency 'net.sourceforge.cssparser:cssparser:0.9.24'
 		dependency 'net.sourceforge.htmlunit:htmlunit-core-js:2.28'
-		dependency 'net.sourceforge.htmlunit:htmlunit:2.29'
+		dependency 'net.sourceforge.htmlunit:htmlunit:2.30'
 		dependency 'net.sourceforge.htmlunit:neko-htmlunit:2.28'
 		dependency 'net.sourceforge.nekohtml:nekohtml:1.9.22'
 		dependency 'nz.net.ultraq.thymeleaf:thymeleaf-expression-processor:1.1.3'
@@ -186,7 +186,7 @@ dependencyManagement {
 		dependency 'org.openid4java:openid4java-nodeps:0.9.6'
 		dependency 'org.ow2.asm:asm:6.0'
 		dependency 'org.reactivestreams:reactive-streams:1.0.1'
-		dependency 'org.seleniumhq.selenium:htmlunit-driver:2.29.2'
+		dependency 'org.seleniumhq.selenium:htmlunit-driver:2.30.0'
 		dependency 'org.seleniumhq.selenium:selenium-api:3.8.1'
 		dependency 'org.seleniumhq.selenium:selenium-java:3.9.1'
 		dependency 'org.seleniumhq.selenium:selenium-support:3.9.1'