Upgrade test dependencies

Author: eleftherias

gradle/dependency-management.gradle

@@ -4,7 +4,7 @@ dependencyManagement {
 		mavenBom 'org.springframework:spring-framework-bom:5.1.15.RELEASE'
 		mavenBom 'org.springframework.data:spring-data-releasetrain:Lovelace-SR17'
 		mavenBom 'org.springframework.security:spring-security-bom:5.1.10.RELEASE'
-		mavenBom 'org.testcontainers:testcontainers-bom:1.12.2'
+		mavenBom 'org.testcontainers:testcontainers-bom:1.12.5'
 	}
 
 	dependencies {
@@ -21,12 +21,12 @@ dependencyManagement {
 		dependency 'javax.annotation:javax.annotation-api:1.3.2'
 		dependency 'javax.servlet:javax.servlet-api:4.0.1'
 		dependency 'junit:junit:4.12'
-		dependency 'mysql:mysql-connector-java:8.0.17'
+		dependency 'mysql:mysql-connector-java:8.0.20'
 		dependency 'org.apache.derby:derby:10.14.2.0'
 		dependency 'org.assertj:assertj-core:3.13.2'
 		dependency 'org.hsqldb:hsqldb:2.5.0'
 		dependency 'org.mariadb.jdbc:mariadb-java-client:2.4.4'
 		dependency 'org.mockito:mockito-core:3.0.0'
-		dependency 'org.postgresql:postgresql:42.2.8'
+		dependency 'org.postgresql:postgresql:42.2.12'
 	}
 }

samples/gradle/dependency-management.gradle

@@ -1,6 +1,6 @@
 dependencyManagement {
 	imports {
-		mavenBom 'com.fasterxml.jackson:jackson-bom:2.10.0'
+		mavenBom 'com.fasterxml.jackson:jackson-bom:2.10.4'
 	}
 
 	dependencies {
@@ -10,8 +10,8 @@ dependencyManagement {
 		dependency 'javax.servlet.jsp:javax.servlet.jsp-api:2.3.3'
 		dependency 'org.apache.taglibs:taglibs-standard-jstlel:1.2.5'
 		dependency 'org.seleniumhq.selenium:htmlunit-driver:2.33.0'
-		dependency 'org.slf4j:jcl-over-slf4j:1.7.28'
-		dependency 'org.slf4j:log4j-over-slf4j:1.7.28'
+		dependency 'org.slf4j:jcl-over-slf4j:1.7.30'
+		dependency 'org.slf4j:log4j-over-slf4j:1.7.30'
 		dependency 'org.webjars:bootstrap:2.3.2'
 		dependency 'org.webjars:html5shiv:3.7.3'
 		dependency 'org.webjars:jquery:1.12.4'