Update to org.slf4j 1.7.30

Fixes gh-7922

gradle/dependency-management.gradle

@@ -189,11 +189,11 @@ dependencyManagement {
 		dependency 'org.seleniumhq.selenium:selenium-java:3.141.59'
 		dependency 'org.seleniumhq.selenium:selenium-support:3.141.59'
 		dependency 'org.skyscreamer:jsonassert:1.5.0'
-		dependency 'org.slf4j:jcl-over-slf4j:1.7.26'
-		dependency 'org.slf4j:jul-to-slf4j:1.7.26'
-		dependency 'org.slf4j:log4j-over-slf4j:1.7.26'
-		dependency 'org.slf4j:slf4j-api:1.7.26'
-		dependency 'org.slf4j:slf4j-nop:1.7.26'
+		dependency 'org.slf4j:jcl-over-slf4j:1.7.30'
+		dependency 'org.slf4j:jul-to-slf4j:1.7.30'
+		dependency 'org.slf4j:log4j-over-slf4j:1.7.30'
+		dependency 'org.slf4j:slf4j-api:1.7.30'
+		dependency 'org.slf4j:slf4j-nop:1.7.30'
 		dependency 'org.sonatype.sisu.inject:cglib:2.2.1-v20090111'
 		dependency 'org.springframework.ldap:spring-ldap-core:2.3.2.RELEASE'
 		dependency 'org.thymeleaf:thymeleaf-spring5:3.0.11.RELEASE'