Upgrade Postgresql JDBC driver version to 42.3.5.

Closes #1240

Author: schauder

pom.xml

@@ -36,7 +36,7 @@
 		<mariadb-java-client.version>2.7.2</mariadb-java-client.version>
 		<mssql.version>9.2.1.jre8</mssql.version>
 		<mysql-connector-java.version>8.0.29</mysql-connector-java.version>
-		<postgresql.version>42.2.19</postgresql.version>
+		<postgresql.version>42.3.5</postgresql.version>
 		<oracle.version>19.6.0.0</oracle.version>
 
 		<!-- test utilities-->